Opa1656 vs opa1612 forum reddit. 25 V to ±18 V, on only 3. ti. 1 kOhm - 1 MOhm 4). 2X OPA1612 + 2X OPA1656 in my double DAC AK4497 2 X OPA1656 in my Aiyima TPA3251. com OPA1612, MUSES8820, OPA1692, LME49723 and the NJM8801. thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. According to the TI datasheets OPA1612 has less noise than OPA1656. My statements were verified: - OPA1611/1612 are optimized for better distortion than the OPA211 (already pretty good). The OPA1656, OPA1612 (the ones I'm currently using) or a low noise NE5532AP (if you really like the sound from the stock opamps). Sets 2-4 shows almost the same: After working with some OPA1612 on my recent Topping PA5 D01 Module replacement project (at ASR), a friend sent me a few OPA1612 opamps he ordered when they were in stock since i couldnt get them anywhere. What is a related question? OPA1612 OPA1656. But not with me, ive seen how these discussions usually end up 😅 The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I can take any voltage measurements that may be required but I do not Can't tell the difference between the original output wires vs the copper wires I stuck in there. It There is a paper out there that I read online comparing the Opa1656 to Opa1612. I guess we anyway use an IC socket so members can choose and experiment themselves. lib file into the related LTSPice folder 2. Featured Vendors I have used the OPA1612, AD797, LT1115, OPA1642 and OPA1656 in phono/analog preamp stages for a while now and have conducted extensive listening tests, sometimes double blind, sometimes blind, The OPA1656 is the new kid on the block, and has the most impressive data sheet specs. That is, when you do the math, you find that 1 OPA1656 will be be cheaper than OPA1612 and performance very close. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. It's made on the same process as OPA1612, OPA1642, OPA1622, OPA1692, and many others. Audio, Audio, Audio! OPA1612 is too weak for 10mA current. In principle all variants should sound transparent, but you have the option to change the Audiophonics OP amp if you want. It's a killer OpAmp, and better I would be very interested in hearing opinions on opa1678 versus opa1656, as I'm using both in different products. Use a socket and try a few out. The first candidate is the OPA1622. OPA1656: 611Kb / 23P [Old version datasheet] Ultra-low-noise, low-distortion, FET-input, Burr-Brown audio operational amplifier OPA1662: 1Mb / 32P [Old version datasheet] Low Noise and Distortion, General-Purpose, FET-Input AUDIO OPERATIONAL AMPLIFIERS OPA1652: 1Mb / 29P Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1656: 3Mb / 38P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown??Audio Operational Amplifiers Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of all types, share plans and schematics, and link to interesting projects. Joined Aug 11, 2019 Messages 3,013 Likes 6,666 Location US East. Currently, I require opamps in the DIP package. We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). #2. It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. The Vendor's Bazaar forum is for commercial offers and transactions. This device operates over a very wide supply range of ±2. Mentions; Tags; More; Cancel; Ask a related question. Now they seems to have changed again to opa1612 in many places - maybe a suggestion to try ? I have tried ne5532, opa2604, lm4562 and opa1612 and I prefered LM 4562 in both Aiyima a07 and the tpa3251-based Aiyima a04. Forums. Or, why not, a composite opamp, OPA1612+. Close maybe modern production 3886 are all above average? the designs seem to take the 'typical' GBW spec as the effective minimum My guesstimate puts the safe with production variation margin local closed loop gain corner as low as 100kHz for LM3886 with a greater than 4:1 range designing for stable extra loop gain from the nice input op amp Forum Donor. But I would still like to see the OPA1656 tested. Audio, You don't have to use SA, distortion level obvious on oscilloscope screen. Joined Mar 15, 2024 Messages 11 Likes 16. OPA1612 (soic on dil adapter board), bi-polar from input to output, again a very good opamp, which to me "sounds more balanced" top to bottom than the LME, it is just as dynamic, but just a little less obvious Forums. So far I prefer 2068D over 5532, and 1612 over 49720. Here are the measurements of the dual mono and with different op amps (Sonic Imagery 994, OPA1656, LM4562). the OPA1612 at ~1 nV/rtHz. Not only was that I talked to a TI/B-B applications engineer today. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. May be it is not something that we can hear but the difference is significant. If I remember correctly in some areas the Opa1656 outperforms the Opa1612 The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. Poweramps: Accuphase P-300. Audio, Audio, Audio! I did replace OPA1612 for OPA1656, and also switched ADC input range for the 1. Next, OPA828 was evaluated as a gain or VAS section in a small A class power amplifier with extreme performance (2 MHz power bandwidth, 200 ns rise time, 0. The low frequencies have become less deep, but the bass drum attack has become just fantastic! I wanted to thank daniboun again who made us known that amplifier on this forum I was reading earlier about OPA1656 vs OPA1612, and bipolar vs FET. 5 V to 36 V) on 3. After some time when I have re-checked and re-calibrated my equipment so here are the new results with Victor's 1kHz oscillator + Twin-T notch 1kHz + LNA (OPA1656 with SE to Balance conversion) + Focusrite Forte as ADC. Aug 3, 2024 #201 (OPA1612 vs OPA1656) before production. 6 mA of supply current per channel. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. the ne5532 looks a bit harder, The OPA2156 is a new, high-performance op-amp from TI. Feb 2, 2024 I still need to spend time with the Boxem 4215/E2 before I can consider whether I have a preference between the Total Noise of OPA1656 vs OPA1612. Amplifier: Bamboo V2 3E Audio 260-2-29A Stéréo REB B (OPA1656) I was wondering if I could put OPA1656 (I am most interested in) as a drop in replacement (SOIC is fine)? (SOIC is fine)? I was also looking at OPA1612, AD8599, AD825, and OPA627. Pin can be left floating or connected to any voltage between (V–) OPA1656, OPA1612 or LM4562 is not going to be a big issue. This opamp is not a perfect choice for that task. 3nv/rtHz at 1kHz. Compensation even with 22pF causes oscillations with or without a Zobel network, so this OPA should be used without compensation. I would have no problem staying with them, but I like tinkering. I think each of them needs proper burn-in about 150hours or so to reveal each opamp more noticeable individual signature. But this is audio science forum. Audio, Audio, Audio! Highest distortion is H3, with around -116dB vs signal, which pretty much sets the level of THD (-115. Also, you can try to select from 5-7pcs of OPA1612 the best OPA1611, OPA1612 www. 1-nV/√ Hz noise density with an ultralow distortion of 0. 0000x distortion and so on). OPA627 is really bass forward but you lose details, clarity and energy. I have settled on 4x OPA1656 in my Burson headphone amp and 4x OPA1655 in my Ayon DAC. Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. So you'd be "degrading" the performance by going that route (even though Level of transparency and detail retrieval are better compared to stock OPA1612 and few others I tried from LME/AD/OPA series. It appears that the OPA1611/2 have a lower noise #1. May I suggest the OPA1656 as a possible substitute to the tried and tested LM4562? Forum Donor. 魅族mx4pro运放芯片用的是1612，而xplay 3s用2604，不知道魅族能不能比vivo更屌呢？ 貌似老外们觉得2604比较好有助攻的么 OPA1612 与 OPA2604 对比？ The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. OPA1612 sounds better than any transistor Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Ha ha it's funny because I'm a wide and far reached detailed and accurate fanboy and some people find too many details to be annoying. lib*. 10 kOhm - 10 MOhm Set 1 produces no visual deviation at all. Feb 20, 2020 #1,321 FYI I'm about to order an Audiophonics HPA-S400ET with OPA1612 instead of OP275. I want to change LM4562. Per-Anders Sjöström Prodigy 250 points Part Number: OPA1612 Other Parts Discussed in Thread: OPA1656. 3e Audio | Enhanced design,Exceed the edge,Enjoy sound with passion. . This feature accommodates the power supply constraints of many types of audio products. This opamp could drive 350 ohm better than OPA1612. I. Is it reasonable to add low noise FET input stage like JFE150 or JFE2140 ?? Is bipolar opamp like OPA1612 easier affected by EMI due to rectifying effect? OPA1656 / OPA1612 / Burson V5i / OPA627 / Genuine NE5532 / Genuine Muse 02 / 0PA1622 / OPA1642 / OPA1602 Forum Donor. I agree with you, OPA1612 is really good regarding details resolution, OPA1656 has the best of both world : ultra high definition regarding micro details and very neutral but still Part Number: OPA1656 Other Parts Discussed in Thread: OPA192 , , OPA551 , OPA547 , OPA593 Dear members: For a measuring circuit I need an operational with output TI E2E support forums Search Forum Donor. Joined Feb 23, 2016 Messages 21,852 Likes 39,951. It sounds awesome, for the price it is a must have ! Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Tried putting in opa1612 today. We are also using Site Site Announcements Forum Problems & Feedback Terms and Rules. Modded TPA3255 with modded Meanwell PSU. They'll say the OPA2134 "sounds dark" for example. OPA1656: High-Performance OPA1656 - Better imaging / separation of instruments. I hesitate to recommend those without simulating the circuit. The recent swap I did was from opa1656 to opa1612 in the v3. This chip doesn't fit in the common DIP8 packaging, but thankfully @Audiophonics sells a pre-modified OPA1656 for 5 €. Below, I have highlighted the components that could be adjusted if this the issue. The OPA 627 is well over price and is bass heavy and it’s not worth the price you pay for it The OPA1612 and OPA827 are much better than any of these but these are SOIC and you’ll need an adapter with experience soldering skills. Normally, that's not newsworthy because higher performing parts are coming out all the time. Audiophonics uses TI-LM4562 by default, which on paper has slightly lesser specs than the OPA1612 and OPA1656 which are used in the other custom implementations (EVAL, VTV, Neurochrome, BoXem etc). PRODUCTION DATA. Since I am not interested in the V6 Vivid Dual that it comes with. opa1612+opa1656*10 composite with flying /bootstrapped supply Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Without scoping the outputs or measuring the DAC there's no telling if As Mark pointed out OPA1612 is a terrific sounding opamp and if you have problems with its bold mighty extreme low bass performance or with the extreme high resolution and unfiltered highs you can use other new opamps with a more gentle sound like OPA2209, OPA2189 etc. Joined Sep 4, 2021 Messages 9,056 Likes 15,512 Location UK/Cheshire. As per datasheet Fig 7, OPA1656 achieves this pretty well with loads of 2k (or more) @ output voltage 3V(rms) OPA1612 achieves this flatness of THD+N curve , eg in inverting mode G=-1 (Fig. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the Total Noise of OPA1656 vs OPA1612. But this time it's a bit more interesting. Replacing the two OPA1612 I/U operational amplifiers with an OPA1656. I have an Onix XCD-99 which is basically a Music Hall CD-25. If you want to make sure that's what you hear, you need to conduct blind test. Audio, Audio, Of course. However as the noise gain of the input stage is 34 with the OPA1656 there would not be any stability issues. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. This is a rarely needed parameter as I guess but some of the measurement tasks require that kind of symmetry, and I just bought 1K pcs of RT6863S Test protocol: Audio Analyser 1 : APx555 + Passive filter (Aux-0025) Default filter : AES17 20Khz. Jun 18, 2021 #67 pma said: Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. I have seen better circuits to use as a starting point on this forum and elsewhere on the web. Total Noise of OPA1656 vs OPA1612. DIY (Do-It-Yourself) Discussions I was really looking at the opa1656 but it seems like it’s going to take a month and a half to get here, all the soldered adapter OPA1611, OPA1612 www. In all, I will say the changes are noticeable, but not earth shattering. I've been using mostly LM4562, except when I need a JFET opamp (high impedance inputs for example). Does anybody know design I would like to see the OPA1656, a burr brown sound plus chip. -60dbfs. Now, we run through a hand calculation to find the total noise of a simplified audio system. Compare the datasheets. The specs on the opamp The OPA165x operates over a very wide supply range of ±2. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. And maybe The OPA1612 has lower noise and distortion than OPA1656. The input is essentially shorted with 10mohm resistor in order to have a -140db control signal. Jan 10, 2016 #1. OPA1612 is a great amplifier, however, it is bipolar (input type) and when used immediately at the front-end of a guitar input, the input current noise (1. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. As Finally I decided to nest already very good TPA6120A2 inside feedback loop of another operational amplifier. My For the change of OP, I have ADA4898 which are really excellent, have the qualities of OPA1612 and 1632. 10 Ohm - 10 kOhm, 2). This op-amp is quite popular Site Site Announcements Forum Problems & Feedback Terms and Rules. The OPA1655 is the single channel version of the OPA1656. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. Dual customzied solution will give unmeasurable distortion Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as The OP1656 is the exact opposite, while still being detailed. Thread starter oldphaser; Start date Jan 10, 2016; oldphaser Chief Journeyman . Other Parts Discussed in Thread: OPA2134, OPA2604. Sansui AU-517 (modded). 5V to 36V) on 3. 5). opa1612를 받아주기엔 dk799, This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Whether it is that noisy for you depends upon your application. Also pricing for 1000+ isn't really that expensive for opa1656, opa1602, opa1612. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. I think I used TL072 in my KOT clone. Audiokarma Home Audio Stereo Discussion Forums I’m wanting to change out a dead chip in this Marantz 3800 and there is a known mod where you remove some components and add some jumpers then a 2134 will work. who builds large PA speaker systems. All five op amps have more than half the noise compared to the NJM4560. There are several hundred LM4562 DIP (UK supplier) that I got up to Oct 2016. Audio system: Yamaha RX-A700, Streem FS-808, Jamo A 804, Polk RT50, Panasonic DP-UB820, Fire TV 4k, Roku Ultra, Yamaha WXA-50. At this point the temp gain over ambient with no signal is about 27 deg c. Apr 7, 2024 #141 "It's worth getting a hold of the OPA1656 as it’s input impedance is higher and much more linear than the OPA1612. I did it because of my OCD more than anything else. King of Mods. I would like the OPA1656, but it is too small for OPA1656 and TL072 model are working fine, now. Pin can be left floating or connected to any voltage between (V–) i tryed lme49722 opa2134 and opa1612 ,--. The OPA1622 is a slow device compared to the OPA1612/OPA1656. Please confirm your currency selection: Mouser Electronics - Electronic Components Distributor. The OPA1656 will perform better in many applications. (1/3 of opa1612 cost) with very high symmetry of the input stage, and in that case, you'll see <150-160db H2. The design uses a "composite" op amp and a common 5532 which outperforms both the OPA1612 and EMI So in this discussion, I will focus on the modern Vs. asy using the ADA4627 as a template 3. 7 of OPA1612 I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. I repeated measurements a few times, using sets of resistors: 1). Mark Johnson. It is quite hard to tell differencies in SQ beetween these 3 opamp from first impressions. Other harmonics are all <-130dB, which make them hard to differentiate from the ADC distortions. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving OPA1655 , OPA1656 SBOS901C – MARCH 2019 – REVISED SEPTEMBER 2022 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. opa1612 与 . By copy/paste a third circuit branch, a third opamp model can be tested in parallel: (OPA1612) Edit EE properties value to “OPA1612” and let spice models for all A, B and C component to be found under “OPADUAL1612. If it’ll work I could just buy OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. The resistance from the I/V converter is only 350 ohm. pdf (sorry, pasting the address makes a huge link) you use a The trade off would be noise vs stability. The Opa1612 is the audio version so they made the specs slightly - LMP8672 (probably discontinued) - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, it performs like opamps which are much more expensive, because of the FET Input stage it doesn't produce so much noise even with higher resistor values on its inputs) - AD8599 ( not a To start, OPA1656 is definitely not a replacement for OPA1622, the two parts were designed for with very different applications in mind. Both (I believe He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Soundstage and placement felt more solid. 10kHz notch -130/-130 at least both variants. Any chance you have some measurements of the OPA1612 compared to the Sparkos SS2590 for the regular dual mono? I was also curious how many of the SS2590 opamps are Today I tried my new Burson V5i-D and OPA1656 along with stock OPA1612. In a dac. Mar 6, 2019 #44 but is still ~12 nV/rtHz compared to other low-noise audio op-amps, e. Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. Find parameters, ordering and quality information The newest hot-shot FET opamp is the OPA1656; but it is also SOIC-8 and needs an adaptor. This OPA1656 OPA from Texas Instrument offers very good performances for audio use. 000015% at 1kHz. The OPA1612 op amp is The OPA1612 does not oscillate only if a Zobel network 10ohm+47nF is added to the output. -Category Forums. 000015% at 1 kHz. vintage high performance op-amps in the simple non-inverting pre-amplifier gain stage. I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. I prefer the opa2211 over the opa1612 (same chip but with less better specs). not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you Forum Donor. Best Regards, Chris Featherstone I have to say that this opamp has a very well input stage symmetry which is better than opa1612, opa2156, opa1656, ADA4898, and many-many other opamps 3-4x more expensive. com with a TI insider involved. Power rails were hardwired with Kimber TC cable. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Sep 18, 2023 #73 you are whole heartedly welcome to try swapping em. Speakers: After several hours of testing OPA2209 vs OPA1612 my subjective conclusion is: When you would count the points in the categories (i. 2 mA BUF634A Wide Bandwidth Mode: 210 MHz / 8. I talked yesterday to my buddy Greg B. The OPA1656 is probably another candidate for oscillation in this assembly (but not tested because I ran Of course, I tried OPA1612 as well, some of them gave -148db/-155db but 2nd harmonic is noticeable varies from chip to chip, and I don't like the idea to test at such nanovolts levels each unit. Here’s a great article comparing opa2156 CMO vs opa1612. New posts Search forums. Goggle bill d mod carver c-1. The LM4562 is an exception, but otherwise it are the fast op-amps that JRA has trouble with: Misbehaving: OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. Please, let me know what do you think about that choice. Marketing 101 by having one of the engineers on the diy threads because it creates interest (especially from spec crazy diy-ers who “need” the lastest and best specs and use “word of mouth” via the audiophile threads to push cost up by popular demand) They do outsource them to official distributors ie Mouser, Digi-Key but you have to buy Forum Donor. OPA1611 vs OPA134 or OPA1612 vs OPA2134. An update from me. 000035% of opa1656 so may you can start your talk there. Joined Sep 8, 2012 Messages 848. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. I felt a great improvement overall. Have not compared 2068D and 1612 yet. Apr 6, 2024 See video at 33:01 for Discussion on OPA1612 vs OPA1656 with Bruno. imdamo Member. BUT When it comes to rhythm, musical flow, black background, evenness, mid texture richness, compatibility (regarding diff. Marketplace. - high levels of DC precision are generally not required by audio customers (audio equipment makers). Last edited: 2021-03-09 1:57 pm Facebook Twitter Reddit Pinterest Tumblr WhatsApp In the discussion, @AnalogSteph stated "With this circuit I would explicitly condone opamp rolling. We are also using DACのオペアンプを交換しました。線が少し細くなりましたが、小音量で全体のバランスが良くなり高域のクリア感が増しました。SOP8パッケージの交換は面倒なので、最後にすべくOPA1612に変えちゃいました。SOP8をDIP変換で交換出来るようにとも考えましたが、安定性を考えて中止です。 The OPA2134 is very ordinary, I consider it a side step to the NE5532. Also tried opa1622 which was not as good as the opa1612 or opa1656. Dear all, aiming to keep THD+N figures constant over the audio frequency range. To help others to understand what other audio components are being used, a SML SU-6 and SH-6 are used. Op amps are super cheap. Skip to Main Content (800) 346-6873. Added a new OPA1656. --lme49722 lme4562 lm4562 opamp Some members in the Pass Labs forum section used my design in their First Watt clones with the same conclusion. Head Gear. but seems a lot of work vs. Below is a comparison between OPA1656 and OPA1642. This is just a theory. As long as OPA1656 is used within its application field, and musical flow and neutrality are key (eg one is not trying to colour the music, suggering or drying it), OPA1656 does indeed an excellent job that is difficult to beat Hi there probaly a simple question maybe not. DIY (Do-It-Yourself) Discussions Joined Nov 12, 2022 Posts 1,151 Likes 323 Location Germany. Every amp. They are loaded with two DAC current channels, an RCA adder and an XLR load. OPA1612 is the fourth OP Amp I try in pairwise comparisons - I have two Pearl 3 that I can swap cables between without opening up. Several reference are used on forum. OPA1656ID – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. recordings) The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. Yes, I know everyone likes to think you need GHz op-amps for I/V. 022uf film foil were only caps in audio path she picked the opa1612 from ne5532 the opa1656 and lm4562she thought the 1656 and lm4562 were ok she noticed the ne5532 as the worst and tried to trick her but it was to The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. OPA1656 also has a pole-zero pair in the open loop gain curve to boost the open loop gain at audio frequencies (hence the 53 MHz gain bandwidth product). Especially the last one seems promising but first I need better test equipment to analyze such small distortion levels. OPA1656 - Better imaging / separation of instruments. 다이나믹스나 저음 깊이감 측면에서 거의 비슷하다는 느낌을 받았습니다. Also the OPA1612 does have the highest quiescent over the other opamps we're talking about it will be the hottest. My guess is that you won’t notice a difference. Propose. We would like to show you a description here but the site won’t allow us. Content is provided "as is" by TI and community contributors and does not constitute TI specifications. Luckily I have 2 of these preamps so I can experiment on one of them to see what happens. Misc. OPA1622 was targeted specifically for headphone applications, while OPA1656 is a more general purpose device meant to address analog signal processing in line level audio circuits. There's a community for whatever you're interested in on Reddit. Forum Donor. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. " Let's test this out! AnalogSteph had recommended the OPA1656. 2023-01-19 9:12 pm. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Joined Feb 29, 2016 Messages 9,904 Likes 14,071 Location London. Joined Mar 15, 2016 Messages 8,199 Likes 17,431 Location Monument, CO. He gives strong Other Parts Discussed in Thread: OPA1612, OPA828. look at ADA4898-2 or ADA4896-2 (+/-5V supplies max). English. At this time I'm using OPA1602 but want to experiment with something else like OPA1652 or OPA1656. When we developed the OPA1656, this was also a major Part Number: OPA1656. In 2022 one would suggest OPA1642 and OPA1656 methinks. DIY (Do-It-Yourself) Discussions OPA1692 is best, compared to - OPA1612, OPA2192, OPA2209, OPA1652, NE5532, LME9720, OPA1622, OPA1602, OPA1662 For LP: OPA1692 for now, I have good expectations from OPA2209 but they are out of stock. Jan 3, 2021 #54 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 6dB) I've read somewhere that, typically, H3 will raise when powered from battery cells directly, due to their high internal resistance. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. View all forum topics. 100 Ohm - 100 kOhm, 3). Comparing the two parts: LME49600 Wide Bandwidth Mode: 180 MHz / 13. Joined Sep 4, 2021 Messages 8,854 Likes 15,160 Location UK/Cheshire. Bass: Lesser & not as bloated as 5532. I have a bunch of op amps from when I was playing with a cmoy back in the day (NJM2068, OPA2134, OPA2227, LM4562, OPA1656, OPA1612, MUSES8820). Assuming the voltage noise has a white and a 1/f part, which seems to be correct, for the total RIAA- and A-weighted noise, what matters is the noise around 1162 Hz. I put together a table below showing devices that have high input impedance and some key parameters for comparison. If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. 1-nV/√Hz as well as an extremely low distortion level of 0. /PRNewswire/ -- Texas Instruments (TI) (NYSE: TXN) today introduced an audio operational amplifier (op amp) that sets the latest standard in audio performance. Yes. common mode voltage that I've measured on any op amp. e. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. Both (I believe have Fet-inputs) There’s also 2189 CMOS audio op amp has impressive specs of an impressive was designed for MUX friendly DACs and multichannel dacs! The different players sounded different. So, it is a different design and chip. I got 1,000 x LME49720 DIP (USA) in Oct 17 (panic buy due to phasing out). It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. Precision Operational Amplifier OPA1612 TI E2E™ forums with technical support from TI engineers. 9038 recomendation is OPA1612, OPA1656, OPA1688 and OPA1622 Maybe someone can give a advice. 3 nV/√ Hz noise density with an ultralow distortion of 0. diyAudio Donor. Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. com SBOS450C –JULY 2009–REVISED AUGUST 2014 5 Pin Configuration and Functions D Package OPA1611, SOIC-8 D Package (Top View) OPA1612, SOIC-8 (Top View) DRG Package OPA1612, SON-8 (Top View) (1) NC denotes no internal connection. Audio, Audio, Audio! Forum Donor. Source & Line. They are short and not twisted inside, usually I twist it I agree ) I am testing with my ears, I can't measure but I own many amps, some Purifi, high ends TPA325X, Poppulse, Merus, Hypex Ncore etc. It was recently re-capped and all new guts put in . If thats not the case this forum would not exist and we'd be all using 5532 and nothing else. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. bipolarer Eingang OPA1611 — Energieeffizienter Präzisions-Operationsverstärker mit 1,1nV/√Hz Rauschen OPA1612 Looking at the 2 datasheets the OPA1612 (1. The human ear CAN distinguish -0. OPA1642 sucks 1. In the meantime we will wait for the customers feedback on the component values in order to check the stability of each op amp below using the OPA1656. The OPA1656 is somewhat worse, even A weighted at 4. But it definitely lacks consistency in the sound compared to the Drmordor module. Their distortion is not specified in the audio band. Vendor's Bazaar. May you consider to use the new TI OPA1656 as "SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier" Forum Donor. com/blogs/news/opa2156-hifi-in-cmos. We are also using OPA1655 , OPA1656 SBOS901C – MARCH 2019 – REVISED SEPTEMBER 2022 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. Audio forum. I also refurbish large format recording consoles. OPA1656 is a bit noisy at low frequencies. ” Facebook Reddit Pinterest Tumblr WhatsApp Email I was using opa1656 with fosi v3 ever since I got the uni. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. Joined 2011. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. So, parts are not spec'ed for or The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 25 V to ±18 V (4. This device also has a high output drive capability of ±30 mA. OPA1612 Q1 AD ? But I'm open to any suggestions you might have. just buying a lower-noise op-amp to Hi John Yes, did it my way 1. I ended up staying with this one. OTOH I think the OPA1656 from the - get some OPA1656 (I tested OPA1612 / 1622 / Muse02 / Burson V5i / Genuine NE5532 / MC33272 / OPA1642 / OPA1602) I found your review of the BRZ TPA3255 from May 2020 in the diyaudio forum and there you praised it and said it's dead silent. OPA1611, OPA1612 www. 00006% at 1 kHz. No hump at all and IMD of two devices together looks quite low, at least 3 times better vs DIY 9038PRO(which is 12x times more expensive vs 9038Q2M) I have to remeasure DR/SNR and THD+N as well, OPA1656. Two cases were evalutated – in a Little hiss noise still can be heard if turn up the volume to max level in both OPA1656 and OPA1642. I also have 1656 ready, sitting untested. Joined Dec 21, 2020 Messages 1,899 Likes 2,813. OPA1656 is OPA1656 ACTIVE SoundPlus™ ultra-low noise and distortion, Low THD and Precision OPA1612-Q1 TI E2E™ forums with technical support from TI engineers. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC The opa1678 is a nice little gem, I'm using them on the dam1021, it's a cmos opamp much like the opa1656, but a little slower and low power at 2mA/ch The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 even if the OPA1612 is Part Number: OPA1612 Other Parts Discussed in Thread: OPA1622, OPA1688 Hello, I am considering the OPA1612 as a headphone driver replacement for JRC2114. Marketplace Home. Home. It has a very good dynamic range and a low level of harmonic distortion. The amp Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. Would it also be possible to publish Watts used (at the outlet) while idle before the 10 minute energy reduction window kicks in? Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 25V to ±18V or (4. VS AIYIMA A04 (black PCB Tilear 2. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. Change Location. I no nothing about this. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is The pages for the "Hypex NCx500 DM Lux Dual Mono Amplifier" & the "Hypex NCx500 ST Lux Stereo Amplifier" state that they use the OPA1656, but the "OP Amplifier Selection" drop list has the OPA1612 (and the Sonic Imagery and Sparkos options), while the page for the "Hypex NCx500 ST Stereo Amplifier" only mentions the Link for opa1622 and opa1612 link I got this OpAmps more than year ago and still can't be trusted, but 1612 need soldering and SOP8 to DIP8 converter. xlsx Site Site Announcements Forum Problems & Feedback Terms and Rules. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. Transients are stronger, both rimshots of snare drum Also, I typically preferred simplicity in the op amps I developed. Lme49720 provides same best performance as opa1656 and opa1612. Apr 11, 2024 #381 share a test between OPA1612 and OPA1656 . Two identical gain 11 amplifiers were tested. Good op-amps try not to add OPA1612 is one the most low-noise opamps ever built, so totally recommended for unity-gain stages (LPF or output stage of a DAC, but also I/V stage It has the most stable input capacitance vs. Featured Vendors 5x OPA1612 + 2 OPA1656 (for XLR outputs). OPA1656: High-Performance CMOS Audio Op Amp. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. Facebook Reddit Pinterest Tumblr WhatsApp Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. 8Vrms and remeasured the range -15dbfs. Facebook diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. Featured Vendors OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. For the future M500, M500MK4, I would like to see OPA1656 instead of OPA1612. Apr 28, 2023 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. I swapped Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. Reactions: Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). I'm up to, to design a 3rd or 4th order 20 Hz high pass filter with ultra low distortion. New needs. Pin can be left floating or connected to any voltage between (V–) To compare : OPA1656 bring the Bursons V5I to their knees as well and keep in mind : Burson V5I = $70 vs $10 for OPA1656 OPA1656 is a ultra low noise fet operational amplifier and delivers a low distortion of 0. We already tried try opa1656 opa1612 lme49720 njm4585 etc. We are also using VIN(DIFF) Differential input voltage ±VS V IO Output short-circuit(3) Continuous TA Operating temperature –55 125 °C TJ Junction temperature –65 150 °C Tstg Storage temperature –65 150 °C (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. SoundPlus, cuádruple OPA1611 — Amplificador operacional de precisión con ruido de 1,1 nV/√Hz y baja potencia OPA1612 OPA1611, OPA1612 www. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. Copied the given . OPA1612 is fuller sounding - especially lower midrange but also more dynamic. It ensures a very low noise density of 1. Jan 6, 2020 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's Forum Donor. Site Site Announcements Forum Problems & Feedback Terms and Rules. lib” ** A dual opamp ngspice model* ** file name: opadual1612. Also LME49860NA but I can't find them anymore. The diyaudio forum might be better suited for posing the question. NE5532 is a very good amplifier especially for the price ($0. opa1678 should sound much like the opa1656 Is the OPA1612 good enough to feed into an external amp? It's in the Fiio K3s but I want to use it as a standalone DAC Here’s a great article comparing opa2156 CMO vs opa1612. it probably is OPA1612 or LME49720. Be sure to include the A comprehensive comparison between OPA1612 and OPA2156 (and other opamps) could be read here: https://quantasylum. Also they are very hot. i expected The OPA1656 operates over an ultra-wide supply range of ±2. 5 mA The advantages of the SiGe process used in the BUF634A are pretty obvious. Only unmoderated members can post here. tnt-audio. For example the OPA1678 has a much higher gain-bandwidth product than TL072 and different output impedance, which means that the criteria for it being stable (i. 4 Calculating Voltage Noise at the Output. It made a difference in sound and I'm not gonna deny that. We are also using I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 Classic (thanks to them for sending me an evaluation). I've had an OPA1612 lose its mind in a filter circuit where an LME49720 worked just fine. Phoenix DIY Central! General DIY. The package types and pricing are also shown in the attached excel table. Reddit Pinterest Tumblr WhatsApp Email Share Link. When watching dc voltage change across the 10k resistor from in+ to gnd, it varies only a few hundredths of a mv. There are many cheap opamps to try. Audio, Audio, Audio! DACs, Streamers, Servers, Players, Audio Interface We already tried try opa1656 opa1612 lme49720 njm4585 etc. But that does not say anything about the SQ. It measures better to, with LM4562, but the difference is much smaller than the sound differences. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. When I disassembled the DAC and looked at the circuit, I saw that the I/U op-amps operate in current modes close to the limiting ones. 3. opa1656は私がサンプルを入手した後で量産が始まりました。 最新のオペアンプということでデータシートも読まずに(読めずに)購入している方を何人か見かけましたが、 いったいどれくらいの方がこのオペアンプの真価を理解した上で使用できるのでしょうか。 Forum Donor. I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. I have the Opa1656 and it’s fantastic! I’m dying to Menu. We are also using Unrelated, but the OPA1612 sounds SO clean and the music so involving . I was finding 30-40% to be below-par in terms of burst noise. The OPA1656 has higher Iq but also higher gain bandwidth and very low THD+N. 唔駛買兩粒1611, 根本一樣 LPF :OPA1656 -----一開聲 音場唔大 深度就OK 中低明顯多 模擬感大於OPA1612/22 個聲 延伸高至超高 來得小小刺激 低音多人聲結像 來得唔係好貼耳 套野仔係用來聽口水歌個D 未必滿意 2. Joined Dec 21, 2020 Messages 1,924 Likes 2,847. : bass depth, detail etc. The data sheet is very handy for audio designers working with 600Ω loads, but also presents apparently conflicting specs, and lacks 2KΩ load data. Joined Feb 24, 2016 Messages 10,260 Likes 16,337 Location uk, taunton. Now all the folks are using opa2134 op -amps as the replacement. The OPA165x operates over a very wide supply range of ±2. On Head-Fi forum they say OPA2209 is better than 1612 & Burson. Buy and try several. 000035% (–129 dB) at 20 kHz If you love the OPA1612 you will love the OPA1656 too. 004% distortion of your dear champion and -0. They said no problem, easy to work with and quick follow-up. May 10, 2024 #8 we have switched the OP amp to the TI OPA1656. Staging and imaging are phenomenal. 000 (DIY!) tube preamp with The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Funny you should ask There are some things to watch out for when swapping op amps. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). OPA1612 is one the most low-noise opamps ever built, so Menu. The OPA1656 as follower in non inverted mode has 2H at app. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. Contact Mouser (USA) (800) 346-6873 | Feedback. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s The Vendor's Bazaar forum is for commercial offers and transactions. 1 with OPA1656) VS DrMordor Module : - 3E Audio With OPA1612 sounds great and still have a good sounstage. I don't care about listening tests or something else, just Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. 1 nV/√Hz) has a far better noise floor than the OPA1656 (4. New items New comments Author list Series list Latest content Latest updates updated BUF634A and OPA1656, both available as prototypes directly from TI. The OPA1656 would not be quieter, and would be worse distortion, at least for the input stage, although that is not true for the other stages. Hi Ervin, Yes those devices are very popular, unfortunately I don't have any way to know for sure when they are back in stock. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. The opa1612는 오히려 기대한 것보다는 좋은 성능을 내주진 못했습니다. Joined Aug 3, 2019 Messages 1,019 Likes 1,570. , or OPA1612+power Reddit is a network of communities where people can dive into their interests, hobbies and passions. Aiyima was gracious enough to send me a unit for review and evaluation. Joined Sep 4, 2021 Messages 9,104 Likes 15,593 Location UK/Cheshire. OPA1612 有壓縮感, 但電壓低 如果放係電池機上係okay. Now you are able to audition the AD746 and the LT1124 and the AD8599 and the OPA2209 and the LME49723 and the OPA1656. Hi, As you can see I am using Blue edition Studio grade wires for the speakers, they are very well insulated and use Oxygen free copper. The LME49860 is another option. the differences aren't huge, but big enough to make a change worthwhile. Is the 2134 the right choice. I have a 1988 carver stereo per-amplifier. It is great to have some The original amp has the OPA1656 and the other has the OPA1642. Taking advantage of a wide power supply range and mounted Part Number: OPA2210 Other Parts Discussed in Thread: LM4562, , INA1620, OPA1622, OPA1656, OPA828, OPA1642, OPA1678, OPA1612, BUF634A Pardon if any of the following has been covered. We are also using The Vendor's Bazaar forum is for commercial offers and transactions. The OPA1662 and OPA1664 series of op amps offer rail-to-rail output swing to within 600 mV with 2-kΩ load, which increases headroom and maximizes dynamic range. In note slyt630. S/N ratio is good but not excellent. Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. Joined Feb 28, 2018 Messages 1,991 Likes 2,599 Location Iasi, RO. The OPA1656/1655 I'd go with the LM4562 (= LME49720) instead. 8 bucks for a genuine part. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. Featured Vendors Then use the OPA1656 to amplify by 20dB. BTW, last year I crippled my €4. Question 1: yes, positive L and positive R are the right terminals for mono. The NE5532 is perfectly fine. So I replaced NJM5532DD with OPA1656. Joined Nov 8, 2018 Messages 173 Likes 415. OPA1642. 4 nV/rthz. ) the OPA1612 is the winner. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. ※在庫数欄の表記が『おひとり様 点まで』となっている商品は、現時点で、おひとり様（1団体様）あたりのご提供数量を表記の数量へ制限させていただいている商品です。 Order today, ships today. It outperforms most other opamps, very low noise & distortion, doesn't Last week TI put a preliminary datasheet online for the OPA1656, a low noise, very low distortion op amp targeting audio applications and fabricated in a CMOS Technically speaking, it's really hard to beat opamps like AD797, AD8599, OPA1612, OPA1656, so it might be safer to use one of these over the "exotic" ones, unless swapping opamps is really fun for I also plan to change the opamps (I currently use LM833), probably do some tests with an OPA1656, and modify the 78xx/79xx for something less noise. Audio, Audio, Audio! Amplifiers, Photos: 3 amps side by side (MAX, Fosi V3, original A07), close up of front of the A07 MAX, rear panel of the MAX) This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. 9mA of supply current. -150dB at 1kHz 2,7VRMS. Audio, Audio, Audio! The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Site Site Announcements Forum Problems & Feedback coupling caps and 50 volt 100uf muse bipolar and wima fkp3 . The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. Official US manufacturer of Purifi and Hypex amplifiers Check out our website! Reactions: When compared to the OPA1612, nothing audible. Transparency got way better. Pin can be left floating or connected to any voltage between (V–) The Vendor's Bazaar forum is for commercial offers and transactions. I'm waiting for OPA1656 and ADA4896 to try at I/V stage. 이전에 사용했었던 opa1656에 비해 큰 개선까진 없었습니다. If you like, you can use two opamps in the package with some extra r c components to make a super opamp TI’s LME49860 is a 2-channel, 44-V, high-fidelity, high-performance audio op amp. OPA1656: High This is my first time doing anything DIY with audio. Featured Vendors Trying to figure out whether they're fake is part of the fun Here's my OPA1612 from Ali (sorry for the That's over twice the typical (60nA) but less than the max spec (250nA). It is absolutely hopeless otherwise. 3 nV/√Hz). It's a big beautiful world out there! but not the OPA1612 due to there being no DIP version I think. Adding a signal @2vrms brings it up another 5 deg c. And I've tried many Opamps as well: the stock 5532, some directly purchased from TI 5532P and 5532AP, LME47920, LM4562 and finally some OPA1656 and OPA1612 on adapters. Like a number of forum members, I have been anxiously awaiting the review of this 3eaudio amp. Mar 10, 2019 i don't buy into the discrete opamps anymore. OPA1656 had respectable slew rate without slew boosting so I opted to forego that circuitry in the audio part. Some will point out the OPA1612 (which is even better) or the OPA1656. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP Site Site Announcements Forum Problems & Feedback Terms and Rules. I use one amp and I don't have any imbalance and it provides more power than what I need. g. Pricing and Availability on millions of electronic components from Digi-Key Electronics. Think of it as the 2nd child that's not trying to seek attention, hard-working/dependable and happy in the background. This OPA has a rail-to-rail output toggle at 600mV with a 2K Ohm load, improving Preamp: Pure silver double solid-core hardwired on PCB DIY opamp preamp with gain (OPA1656) and buffer stage (OPA1656 or OPA1612) with the volume pot (TKD) in between. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Level of transparency and detail retrieval are better compared to stock OPA1612 and few others I tried from LME/AD/OPA series. Apr 24, 2024 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Audio, Audio, Audio! In the case of Aiyima a04 ( I have two of them ) it is very clear that the sound quality gets better with LM 4562 instead of NE5532. opa1612 opa1656($3) have thd performance better than -140db. Audio op amps-parametrics-20230616123008. Audio, Audio, Audio! instead of OPA1612 i used OPA1656 since they were in stock and not too expensive, they are very good too, i dont hear any difference. This op amps offer rail-to-rail output swing to within 200 mV of the power supplies with a 2-kΩ load, which increases headroom and maximizes dynamic range. Español $ USD United States. The OPA1642 is “one step down” but still very highly rated, and it is JFET-input which should give a low enough DC-offset to be used directly in this kind of application. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 The Opa1656 has a much wider and better soundstage. Content is provided "as is" by TI and community Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. It might require more capacitance in the LPF of the I/V stage to keep it happy Vs the others. With that being said, there will not be a huge noise performance difference between OPA1656 (~4nV/rthz) vs OPA1678 (~5nV/rthz) when the thermal noise is already 11. You retrieve so much details and trebble extension but could be a bit fatiguing. Hello, i just compared my current favourite opamp opa1656 vs the much older opa627 (its a dual module from audiophonics, Reddit Pinterest Tumblr WhatsApp Email Share Link. bjairou myvm kafxz qjntqd wwf ktinbt elehz orbedx euzuxge fodhue