Opa1656 vs opa627.

Opa1656 vs opa627 Nov 10, 2013 · Discrete opamps were discussed on several different threads but always in context of a specific device they were installed in. Edit: also, do not pass judgement on any of them without giving them a number of hours of use first. He suggested to buy the parts direct from TI. sonics. OPA1656 Listen to the V3 with different dual op-amps socketed and experience the changes in sound! The demonstrated op-amps include NE5532, JRC4580D, Sparkos SS3602, 3 days ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. 06. This player uses no OP AMPS at all in the signal Nov 5, 2017 · opa627が良いのは分かったのですが、 システムの荒が浮き彫りになってきました。 そのあたりを適当にぼかしてくれるオペンプも捨てがたいものがありますね。 とはいえ、opa627で相対的には良くなりました。 かといって、ソニーにopa2134でも、ナカミチに Benefit is lower dc offset and less distortion also high open loop gain also superior stability. But I've compared OPA828 against OPA627AU, BP and SM versions, and OPA828 blows every version of OPA627 out of the water. Added the OPA627 review OPA1656と同様に10kHzの歪みが少ないことが特徴です。 OPA1656と比較して消費電流が少ないですが最大出力電流も少ないです。 初段のノイズが増えていること，消費電力が減っていることから初段の電流を絞ったと思われます。 Mar 17, 2019 · Re. It has a more forward presentation, with a much wider soundstage. It's best use as an alternative to opa1612 when noise is not a big concern. Measurements done directly on headphones-output jack (MUSES8820 + LME49600). I am not certain how this will interact with the D to A chip ahead of the op-amp. Jul 4, 2009 · I agree with you on opa1692 being too narrow compared to the Opa1656. I already have the R-type center tapped transformer and pre-drilled box that I bought also from AE. Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. 0067% to 0. I can't really hear difference this time. 1989, Burr-Brown introduced the OPA627, now considered an audio technology classic, as the industry’s first OPA1656. Well, that was then, now I know better, because I measured some recent Very impressed by the Fosi ZA3s in mono. Great alternative to TPA325X / Hypex Ncore (this is subjective ) is the double Mono Merus amp. I did check OPA1656 in voltage regulators and didn’t like elevated LF noise (compared to JFET opamps). SSZT310. 0026% vs. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for sources of input capacitance variation. 🤣 At least, OPA828 has proper JFETs at input. Sep 16, 2023 · そんなわけで、opa627は今後も入手可能なはずだが、opa1656・opa828が出た現在となっては個人的には価格ほどの価値は無いかと思う。opa1656は1個あたりus$1前後・opa828は1個us$3前後で流通量も潤沢なのでニセモノを掴まされる恐れもない。 Feb 2, 2019 · 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. I do note there is some input current flow in these devices as they are bipolar inputs and in your DAC we are using a fet input device (OPA627) that does not have this issue. Apr 5, 2021 · We would like to show you a description here but the site won’t allow us. It has a very good dynamic range and a low level of harmonic distortion. opa627 628の次世代と謳ってるのを痛感しました！ ある程度のOPAMPならばと思っていましたがOPA828 の音は手持ちのOPAMPにはない音がしています かと言って低中域も固い音、柔らかい音もでるのでジャンル問わず聞けるOPAMPでも有ります 3e AUDIO TPA3250 - сравниваем разные ОУ - OPA1656, OPA627, Muses01, Muses02, VV4ЖМИТЕ НА КНОПОЧКУ "СПАСИБО" ДЛЯ СЧАСТЬЯ!!Понравилось opa627 628の次世代と謳ってるのを痛感しました！ ある程度のOPAMPならばと思っていましたがOPA828 の音は手持ちのOPAMPにはない音がしています かと言って低中域も固い音、柔らかい音もでるのでジャンル問わず聞けるOPAMPでも有ります 3e AUDIO TPA3250 - сравниваем разные ОУ - OPA1656, OPA627, Muses01, Muses02, VV4ЖМИТЕ НА КНОПОЧКУ "СПАСИБО" ДЛЯ СЧАСТЬЯ!!Понравилось Feb 11, 2021 · i will second the notion of the opa1612 being audibly superior to the ne5532 its a huge difference my daughter who patiently sat through almost 2 hours o bling listening tests on 3 upgraded cd players a nad 546bee with foil film coupling caps and 50 volt 100uf muse bipolar and wima fkp3 . 17. See attached, Jan is using the opamp for his project MRK 3 input box (input attenuation & gain) prior an ADC for measurement purposes :redhot: Currently it is not clear, how the measurement (customer) setup was really Jul 24, 2019 · ada4898和ad4627这些够好了，甚至ada4610都不错了，最近ti那些，比如opa1656感觉是换汤不换药（对比opa2156），opa2134的参数跟现在最新几款也是相差无几。 不过，AD的东西都有针对性，要会用，不像TI的可以随便来，例如ADA4898差分输入时阻抗只有5K，AD8620最高只能+-12V。 Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. Sep 14, 2021 · In other news - I was browsing for "OPA627" as in just threw my line in the water and up came an ebay ad by a USA fella who had loaded all channels of his sound/mixing board way back when with the OPA627 and now didn't need the sound/mixing board so was selling off all of the DIP8 OPA627AP (qty roughly 38) for $39ea. Mar 17, 2019 · Only the OPA627-37 go 2V over the rails . B grade results. (See diyaudio. Preferred the opa627 until the Sparkos ss3602 for it arrived. It just was harsh. The OPA827 is perhaps the most transparent Fet OP AMP ever. Feb 11, 2021 · Used OPA1656 in I/V of PCM1792 in dual mono configuration. I preffered the dual opa627 to it in my Aune X8 even though that is leaning a bit too much towards the high end (that is now replaced with Sparkos ss3602). Jul 4, 2009 · Similarly unimpressed by it. On the other hand Steve from Empirical Audio who moded a lot of Benchmarks says that OPA627 is better since it performs better/cleaner at low levels (microdynamics). Feb 15, 2024 · Part Number: OPA627 Other Parts Discussed in Thread: OPA1656, OPA1642 I am in the process of restoring and upgrading several pieces of the vintage Kenwood Basic C2 preamplifier. It will take on the coloration of what precedes it- etc. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. The device is used as a current to voltage amplifier in the Philips based chip set design. Second harmonic decreased with about 16dB and the third one with about 2dB; background noise remained identical, very low actually. BURR BROWN OPA627 Dual OPA with Support (Unit) Ref : 8434. (Came with the other DAC an Aune X8 XVIIIth. ti. ) MUSES02 is just a fancified NJM4580 though, with very little actual performance difference, so if I were curious I'd just stick with the lowly $0. Tried in this place OP275, OPA1612, OPA1642, OPA1656 and OPA828. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Opa1656 has good phase response at high frequency. Performances of OPA627 and OPA828 are very close. In final have to say, that OPA1656 is best of the best in I/V for me to now. Added the AD843 and AD845 reviews. Jan 11, 2021 · 評価がとても高いFX-Audio社のDAC SQ5Jを試しに買ってみた。 ひと昔前は100万円もする高級DACに使われていたと言われるバーブラウンのDAC･IC＝PCM1794を使いながら、これは定価がなんと1万円。 そもそも100万円ってのが余りにもボリ過ぎだとは思うが、それにしても安い。 中国が世界の製造業を席巻 The OPA627 and OPA637 (OPA6x7) operational amplifiers (op amps) provide a new level of performance in a precision FET operational amplifier. com Hypex Ncore NC252 vs Fosi V3? (vs Topping pa5 II, pa7+?) CauliflowerEars; Nov 16, 2024; Sep 14, 2021 · In the older data sheet for the difet 1641/42 you will see for the first time the same RIAA phono preamp application that was lifted and placed into the 2019 CMOS OPA1656 data sheet by the Project Manager I think purely as a proud marketing thing vs. Thanks in Mar 17, 2019 · The OPA1641 would be slightly better. For a subcircuit you have to make a . Of course op amps are not his first choice. May 19, 2017 · I've used AD8610, OPA627 but don't really have much concern for/belief in particular op amp's 'sound' once you get to a decent quality level today I would look at OPA827 and the more reasonably priced OPA164x parts for line level input, possible volume pot feed Feb 6, 2018 · 最近オペアンプ交換が楽しくて色々試してみました。個人のメモを兼ねてレビューしてみます。環境は、CD取り込みからハイレゾ化まで手軽にできるCurioSoundを使用してCDから取り込んだデータを96kHz 24bitのflac形式で保存。 "安いのにすごいSHANLING M2sを買いました"で紹介したM2sからラインアウト Dec 16, 2023 · If you want a FET at all costs, you can try the OPA627 type. Using hd600s and 400is to test them Ive compared the Jul 14, 2021 · 最近才在解码iv上用了opa1656，非常平衡的声音，快速清爽干净立体，细节丰富，搭配lme49710做lpf输出，非常完美。 这个opa2156参数跟1656很类似，就牺牲了些噪声等指标换了更高的压摆。音频应用其实20以上就足够有余了，就不知道这俩音色上是否跟参数一样类似？ Nov 25, 2015 · Im interested in op amp rolling for my amp since its not expensive to try out and I was surprised to find a lot of variation between them, the amp has a very simple circuit so my results could be more siginificant than with other amps. In September I wrote about our discrete OP amp vs. common mode voltage that I've measured on any op amp. I also reduced the gain from 60 to 54dB. 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 Feb 19, 2024 · 若干低価格になったもの。音質的にはopa627と酷似しているらしい。 opa627は入手性が悪くなっているので、実質後継機種か。 コスト面・音質面でmuses02dと同レベルのオペアンプ ④opa1655（デュアル化、dip化したもの、￥1000） jfet入力 opa1656の1回路版 Jul 9, 2008 · According to Benchmark's technical director John Siau they tested OPA627 and got worse results than NE5532. 000035% (-129 dB) 的低失真，改善整個音訊頻寬的音訊訊號保真度。裝置具有出色的輸出電流驅動功能，在2 kΩ負載下能提供電源供應器250 mV內的軌對軌輸出擺盪，並可提供100 mA的輸出電流。 Aug 13, 2014 · I have 2 OPA2134s and a pair of OPA627 in my Bugle 2 phono, I replaced the output 2134 with a pair of 627s on an adaptor and found that the bass was improved, left it that way ever since. I dug out all my op amps and had a day of “rolling”. I hear OPA828 is the new version of the OPA627, so I may try that one out. GMT+8, 2025-5-17 16:24, Processed in 0. Nov 9, 2024 · この『OPA1656』は2020年に発売されたTI製最新？のオペアンプです。OPA1655がシングル(1回路)、OPA1656がデュアル(2回路)入り。Web上のインプレッションを参考に選定、購入しました。OPAと付くICは、言わずと知れたDAC等のオーディオ用IC開発の老舗「BurrBrown」社の製品です。Burr-Brownで有名なオペアンプ Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. In my case the OPA828 has been a clear upgrade to the OPA627 but the OPA1656 is an upgrade to the OPA828. Noise and distortion wise OPA1641 or OPA827 perform better. opa627 (in dual), lt1028 (in dual), lm6172 is too much speed, and are unstable in my tube-opamp hybrid preamplifier. 6 days ago · To do this, simply replace the OPA1656 on the interface card with this DIP8 mount. It offers exceptional performance in almost any audio application. Nov 6, 2024 · Comparative Analysis: OPA1656 vs OPA2134 The OPA1656 is crafted with a high-voltage CMOS architecture, augmenting its adaptability while also elevating its noise performance. Why did T. Aug 16, 2022 · Choosing the right audio op amp in different contexts: Parts discussed in this thread: OPA167x, OPAx134, OPA165x, OPA1622, OPA160x, OPA1692, OPA1611, OPA1632, With so many different audio op amps available from TI, it can be difficult to determine which one is right for you. 05. 🙂 Oct 5, 2022 · Images show OPA627, Burson V5 and Buson V6 Classic op-amps and their relative size and Cyenne Dac 3100 with OPA627 and two V6 Classic op-amps in sockets. com ). One other device that would be worth looking into is the OPA1656 - it is only a dual but has lower wideband noise. Jul 26, 2020 · 2 X OPA1656 in my Aiyima TPA3251. 158871 second(s), 18 queries . 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. I'm no expert on deciphering specs that's why I listed the thread hoping to hear from others. Then I inserted this newly created OPA1656 into a schematic and checked it with a FR sim. The two stand out winners were OPA1656 and Oracle II 02, the latter being slightly less grainy and with smoother high frequencies. asc file and place both in the directory that you are using for your model, they are in the . Sep 14, 2023 · They don't even show Vos vs Vcm plot so we don't know how the transition looks like, only Ib vs Vcm which has that nasty step change which will cause trouble with unmatched source impedance. SSZT411 September 2019 OPA1656, OPA627, TAS6421-Q1, TLV320ADC5140 1 2 3 Company History 5 A New Era with TI A Next-generation Audiophile Looking to the Future Jun 18, 2019 · Hello everyone, I have the DAC Emotiva XDA-1 preamp with the DAC Analog Devices AD1955 and Burr Brown OPA-2134 op-amps, I want to update to the Burson Audio Play with the DAC: ESS Technology SABRE32 / ESS9018 and NE5532 X 3, NE554 X 2 op-amps, would it be a good update to the Burson Audio? thank you very much to all. OPA627 seems to have a tiny bit more clarity. Feb 11, 2021 · 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 buffer. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Feb 16, 2021 · と思って、今度は発売日が比較的新しいオペアンプを組合せてみた。 使ったのは次の4種類。 opa1656、opa1622、opa2211、＋特別な存在と言われることが多いopa627bp 最終的に選んだ組み合わせは、 ・i/vが2個ともopa1656 ・差動はopa2211 これだとかなり現代的な音に May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. Feb 19, 2019 · I tried my trusty opa1656 with otherwise stock op-amps in the V3 mono 5Amp PS, and what I heard was a noisy presentation. 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. 50 version OPA627 is a very good part by all accounts. In exchange for two Burson Classic dual op-amps I writing my honest review of their performance in comparison to OPA627 and the Burson V5s I already own. Mar 17, 2019 · the OPA627 metal had a wire to the can too, so it was really shielded! Also at this old days, a BB engineer told me, that the chip was build on a glass substrate, otherwise the better figures could not be fulfilled as on plastic. Представитель линейки SoundPLUS для высококлассных аудио устройств. com next week. I haven’t tried it for audio as outright replacing JFETs with CMOS looked like blasphemy to me. Oct 14, 2024 · OPA1656: The OPA1656 has a slightly warmer and more musical sound compared to the OPA1612. Impact on the XLR Channel Jun 8, 2023 · I read that many like OPA1656/1655 very much. Many people have already replaced 5534 with 627 in various applications and it seems to work well. (Which might seem obvious but some people seem to miss it anyway. IC OP amps and mentioned that OPA627 was the best jfet input OP amp I knew. Submit Document Feedback. The opa1656 this time is smoother than the opa2156 in previous test and opa1612 has better bass than previous. So put 10 x OPA1656 in a bag to send costs 16,76 $ , to put 10 x OPA627 in a bag to send costs 130 $ . One thing is that TI is not sending samples when request comes from private mail services like gmail and similar. I don't care about listening tests or something else, just want to use the technical better one in my amp. Noise-wise, like 1656 it is not ideal for MM pre because of high 1/f corner but often still better than a bipolar with high current noise. Jul 4, 2009 · on first sight i would say the opa627 has these attributes compared to the opa1656 - sounds somewhat thinner, voices sound more lean but at the same time a bit more sibilant - you could say its a bit more analog sounding - not so bass heavy as the opa1656 (the 1656 really shines in bass regions, specially infrasonics are much more "audible") Dec 6, 2018 · The OPA627 is mainly good for very low input bias - usually no need for this with audio. The big one is adding the warning about the AD823's output current issue. Apr 7, 2019 · The OPA1656 isn't even on that list yet. I was literally sitting in the lab with the systems engineer for that part, measuring a composite amplifier made up of OPA1656 + BUF634A, when we saw your post. Please LIKE and SUBSCRIBE Amazing Op Amps - https://virtualhifi. When compared to the popular OPA111 op amp, the OPA6x7 have lower noise, lower offset voltage, and higher speed. Mar 31, 2008 · But the opa627 does not seem to do anything wrong except that it does not have the details and resolution as the LM4562, though it still sounds very detailed with high resolution. 5V inside of the positive rail . I . Their MOSFET input with very low common-mode modulation of input capacitance should be a good match to the highish-impedance circuit. So to put 1 in a baggie exactly like the OPA1656 , they charge 15,69 $ !! , to put 10 in a baggie : 130 $ !!! TI does all the work and Mouser leaches more profit off from it. I would not classify the OPA1656 as a high speed amp in this context. It certainly has the DNA for the job. The low voltage noise combined with the low current noise make this device great for low and high impedance applications such as a high gain microphone pre-amplifier. opa627. I have tried my favorite list of op-amps: OPA1656, OPA828 (with adapter), OPA627 (with adapter), and AD843AQ (with adapter) . asy and a . それに対してopa627のピアノの音には若干の濁りが感じられます。ボーカルはmuses05がうっとりするほど滑らかなのに対し、opa627はハスキー系のアーティストで強みを発揮します。サックスは細かな息づかいがリアルに聞こえるopa627に軍配が上がります。 We would like to show you a description here but the site won’t allow us. I doubt I will jump up enough to try a Sparkos or Burson. If there are more complicated parts (especially active parts) in the FB path, a faster OP can be a problem. 2. Added OPA637 info to the OPA627 review. 3V inside of each supply. It depends very much on the circuit if a faster OP can be used. Mar 3, 2021 · I spoke with a Cimarron tech and he mentioned it was Ti's newest replacement for the OPA827 and OPA627. com/products/supersonic-v1-op-ampFor stunning revolutionary 3-way speakers visit - https://q Jan 27, 2024 · The advantage of OPA1656 is that it has JFET inputs rather than bipolar, so its input bias current is much lower, making it easier to keep the output DC offset low in some applications. Apr 6, 2020 · Maybe try the OPA2604, designer Thorsten Loesch of AMR fame regards that one as good, unless you move to singles on an adapter board using something like the OPA627. distortion due to source impedance with the OPA1656 and common mode input signal voltages: do you have any data for that, or for the same mechanism with the OPA627 which you say the OPA1656 improves upon? I have not been able to find any. May 19, 2004 · It is marketed as an modern upgrade for OPA627/637 and 827 at a fraction of their costs. You are not “wrong“ in describing the Opa1656, it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. For use with this DAC, my preference order is like: AD843AQ > OPA627 > OPA828 > OPA1656 > OPA1612. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. CMRR is not a big issue. maybe the opa604 would have done it in the bands, but I don't have enough of it here to compare and because I already spent the money for the opa627 we like it very much, I'll leave it now. I also really liked the OPA627 that I had in an audio-gd dac years ago. 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 warm. com with a TI insider involved. 5 days ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. Jul 5, 2006 · And of course, OPA627 is a single while MUSES02 is a dual. This presented itself as a more refined and detailed version of the OPA2604. zip file below. Jul 4, 2009 · Amazing value and no more urge to upgrade. Mar 13, 2010 · They sound nothing at all like the old OPA627. Mar 17, 2019 · For audio use, I see no reason to buy OPA627 when you have OPA827, OPA828, OPA164x, and OPA1656. Very clean and natural sounding amps as standard, not as full or punchy as my Naim but still impressive for their size. Aug 11, 2023 · Continue to this OPA627 op-amps, I was quite shocked that the OPA627 can deliver better sound quality than OPA1622 in one specific music aspect. 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. PRODUCTION DATA. The OPA1656 prelim datasheet and prototype samples should be available on ti. 3 MHz. 5 metre cable at 33. May 23, 2018 · The second time I did test with opa1656 and opa1612. Anybody know beter opamp than OPA2604 with realistic "analog" Oct 12, 2020 · The AIYIMA Tilear Rev 2. GMT+8, 2025-5-19 12:21, Processed in 0. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. 02. 000. 1 with great caps and some mod (OPA1656 / inductors update) sounds really good too. as well and I might try a opa2134 I have lying around. Composite amplifier is one of the best application with opa1656. It stands out by achieving the industry's lowest voltage noise, distinguishing itself notably from the OPA2134, especially in audio scenarios where minimizing noise is an Jul 4, 2009 · There's a thread on DIYaudio about the OPA1656, with a guy from TI telling very useful things. Dec 31, 2021 · Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). Since your L/R channels already feature the Oracle II 02, which are known for their musicality, the OPA1656 could provide a more cohesive overall sound, complementing the Oracle II op-amps. Why do I ask and or want this ? Mar 7, 2019 · Funny you should ask about the audio version of OPA2156 (will be called OPA1656). Updated the OPA627 review with A vs. I prefer the opa2211 over the opa1612 (same chip but with less better specs). Sep 14, 2021 · Therefore the new bottom line is, if they called a halt to these festivities and I had just these choices I'd go with the "Good enough" 220R/15pF combo; use the 1612A or 1656 if they sounded better than the current favorite and well-behaved OPA627. 141026 second(s), 17 queries . com. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. This gave me a chance to Nov 11, 2024 · OPA627 ( goes actually into the oldschool direction, it has similar attributes as the burson V6 vivid, but latter sounds more refined ) OPA1612 ( pretty clean, but for me it sounds abit boring at times, less smooth and less deep/slammy bass than the OPA1656 ) OPA1622 ( similar to the OPA1612 from what i remember) Nov 26, 2017 · opa627 for the bands (6x) opa2604 for the hp & the ms-matrix the opa627 are great, but also not quite cheap. We would like to show you a description here but the site won’t allow us. Mar 17, 2019 · 3. Best SQ have with 1656. 21. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. That seemed like a reasonable target for the supply current of the OPA1656 as well. Added the OPA627 review Mar 17, 2019 · Re. 4nV/rtHz both flat. Marketing 101 by Jan 2, 2024 · 2) If you don't then think twice and look at cheaper and cooler-running alternatives like OPA1688, LM4562, OPA1656, ADA4625, OPA1612, OPA1642, OPA1652, OPA1662 and more (NE553x if you can still get them!). And ADA4627, which appears intended as a direct replacement (a decompensated ADA4637 exists as well). We didn't have a dedicated thread to gather all the impressions, reviews and tutorials for this relatively obscure class of audio devices so here it is! I'll keep Mar 17, 2019 · The good news is that in audio, impedance levels are relatively low so parasitics need to be larger to have a bad effect, and most audio opamps are not really high speed. 2V inside the negative rail and 2. 157628 second(s), 19 queries . Not even the new CMOS amps go beyond the 0,7 V . Jul 4, 2009 · the 627 is a fine chip worthy of going down in history as one most pleasing all rounder - many others I have tried wound up being nice and detailed but lacked the warmth of the 627bp - the successor for me was the 1611a (seen below on SOIC-8 to 8-pin DIP) which was used for super sensitive sonar equipment in the early 2010's Mar 5, 2018 · Seems that with the cheap good NE5532P the THD+N decreased from 0. In Stock . the much more expensive MUSES01. The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. Nov 30, 2021 · For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Two opa2604 coming in (probably fake) to compare it with. (If I am not wrong OPA1656 is a really modern OP Amps from March 2019 vs 2017 for the OPA1692). I swapped to opa1622's as I had several sitting around and the noise was gone instantly. Not targeting Mouser here , most of the others are worse. 022uf film foil were only caps in audio path she picked Nov 24, 2022 · I have tried 5 opa1656 and lme49860 and my final decision on the cheap side for op amp all dual to mono, at front 2 opa627 in the middle 2 opa2604 and at the back opa445bm surprise the opa1656 was not the winner in any position but is the best sounding in the non Pro 07 amp. Why not go beyond 2 or even 3 V over supply for ESD and overvoltage protection? Mosfets usually can have 20 V GS voltage. Mr Siau even stated in details which harmonics got worse. DC voltage (as shown on the front page). However, it doesn’t sound like those two chips at all! It’s very musical imo. The design has special speedup circuitry in the J-FET input stage to avoid slew rate limiting and as OPA627 also has a huge differential input voltage range (no antiparallel protection diodes in input, which TI calls "MUX friendly"). Probably the circuit is better than the first one or something went wrong or I was just imaging all of those. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. Added the OPA227 and OPA228 reviews. Jul 14, 2021 · 最近才在解码iv上用了opa1656，非常平衡的声音，快速清爽干净立体，细节丰富，搭配lme49710做lpf输出，非常完美。 这个opa2156参数跟1656很类似，就牺牲了些噪声等指标换了更高的压摆。音频应用其实20以上就足够有余了，就不知道这俩音色上是否跟参数一样类似？ Nov 25, 2015 · Im interested in op amp rolling for my amp since its not expensive to try out and I was surprised to find a lot of variation between them, the amp has a very simple circuit so my results could be more siginificant than with other amps. diyaudio. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. 18. On a side note. Feb 16, 2024 · 前回、NJM8830GM1の表面実装を行いDIP8化したので音質チェックしてみる。以前購入したオペアンプと聴き比べてみる。ついでに最近購入したOPA1612やOPA627AUも音質比較してみる。オペアンプは自作Chu MoyアンプやFX-AUDIO DAC-X3Jに接続。イヤホンにはソニー XBA-N3を使って試聴してみた。 NJM8830GM1同じ Sep 14, 2021 · OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. Широкий диапазон напряжений питания: от ±2. Jul 4, 2009 · The two others are opa2107 and opa627. May 14, 2025 · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. I tried the 1656 in there but didn't feel it added anything. This is my reference OP AMP for filter/buffer position. I also have an older Cal Aria MK3 cd player, that I modified. I haven't tried OPA1656 unfortunately, so I can't tell how it compares against it. Mar 18, 2025 · Still looking for "OPA1656 style into dip8", not those from Cimarron and preferably in China, to try SOIC8 duals like the opa1656, 1642 and 192. 000035% (–129 dB) at 20 kHz If you love the OPA1612 you will love the OPA1656 too. I can't say for sure. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. OPA627 mid-range, especially for the vocals are a little bit more forward in the presentation but more presence and body. As much as I think that op amps do have a 'sound', in recent days I've been revisiting the LM4562 and sonically wise, to my ears it doesn't really have that 'typical' op amp signature, it 3 days ago · Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. In my opinion, better than the OPA627 but it has not yet earned its stripes in the audio community. OPA192 (FET input) looks better and they show the Vos vs Vcm transition: OPA1656 : Звук точный. Jul 21, 2020 · Have entered all the specs from the OPA1656 into it, see first image below. The advanced process technology here has flat capacitance vs. OPA1656 1/2 OPA1656 Input Output Pad Product Folder Order Now Technical Documents Tools & Software Support & Community 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. Muses05もopa627もOPAMPとして異様に高いですからね。 OPA1612が良い音だとはよく聞くのですが、JET入力のOPA1656はどうでしょう Jul 3, 2016 · opa627 opa637 opa1612 lme49990 ad8620 ada4627 など とりあえずiv変換はopa627がよさそうですがopa2211とかもいけそうなので、また今度試します。 しかし、lpfの交換でも結構音が変わりますね。 lpfに使ってみたオペアンプの感想 Feb 28, 2021 · G'day all, I guess that this sounds suspiciously like the subject of 'op amp rolling, but actually it isn't. Sep 14, 2021 · OPA2156, basically an OPA1656 but with very low offset (25uV, four times better than untrimmed 627), R2R input, larger input series resistors (thus a tiny bit more noise), less aggressive loop gain. It has the most stable input capacitance vs. I routinely use OPA1656 and related on adapters without any issues. Apr 5, 2021 · The original amp has the OPA1656 and the other has the OPA1642. 2002. Neither of these newer op amps is available in DIP package which may be a consideration. May be 828 will be better, but i have to do some thing in the board to extract best of it. Using hd600s and 400is to test them Ive compared the hifidiy论坛-一直以来，手头玩过的运放不计其数，自以为对运放已经很有心得，没想到今晚偶然的一次pk竟然颠覆了之前的所有经验。玩过的单运放有opa627,opa134,opa604双运放有：opa2 May 7, 2020 · opa627 ：縱向和橫向聲場寬廣，三頻平衡，低頻下潛夠深，量一般，中頻不過不失，高頻通透，延伸好，在加裝散熱片的前提下，電壓提高到 ±18v 供電優勢更加突出。缺點是雖然夠通透但缺少一點甜味，電路設計得不好的話，可能會有高頻太多感覺不耐聽。 May 6, 2022 · Good morning. Dec 11, 2019 · Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. In this thread the stacked AD844 was far better in the Cary 303/200 than the OPA627 for I/V, but the OPA627 was the best 同 OPA1656 上年出 OPA1656採用高頻寬和高開放迴路增益的設計，可在20 kHz下達到0. It is on the mid-range. 1 with the following OP amps : OPA1612 OPA627 OPA1656 Burson Audio V5I genuine Jul 4, 2009 · I vastly prefer them over OPA2156 and OPA1611, as they are too similar but worse to my ears. www. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. I know OPA627 is 1029 less than OPA 1656 Search for it on google for OPA627 and OPA1655! for 5534 replace No one can tell you the difference between an OPA1655 and an OPA1611 in a Wiim. Small improvements. GMT+8, 2025-5-14 14:56, Processed in 0. But the 1612 and the LME 49720 are my favourites and it’s hard to decided which is better! The worst one I ever got and was well over price due to the hype on HeadFi was the OPA627. 00005 : 10 В/мкс : 114 дБ : OPA1662 ①00:00ne5532②02:53muses8920③05:48opa627aunfjのデジタルアンプyd202jでオペアンプの聴き比べをしました。opa627auはnfjで購入したものですが付け始めは鈍い The OPA1641 would be a good alternative for the OPA627 in the servo, or for that matter, in the signal path. 25 V до ±18 V : 0. Jan 28, 2018 · OPA627/37 I tried both OPA627 and OPA637 in this circuit, and both were pretty much the same because of the low gain setting of the feedback resistor. Don't let power supply current limitations get in the way of performance. . Feb 17, 2018 · OPA828 / OPA2828 vs OPA627 Rings my alarm bell too much :) www. 9nV/rtHz vs. And yes he knew I was using it for audio. GMT+8, 2025-5-19 06:03, Processed in 0. A quick snapshot of the OPA1656 performance specs: I've ordered some opa2604's from ebay still in transit to play with. So between the two, the OPA1644 is the better choice. I try all five opa1656 but the best sounding was using 2 opa1656 at the front and 1 opa1656 in the back, in the middle 2 opa2604 Opa1656 is the best I tried for Aiyima07 not Pro, the 2604 in that model meehhh This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Only companies. 孤高のエンペラー。その音は、他を寄せ付けない圧倒的な存在感。時に威圧感すらある。透明感・ダイナミズム・開放感・表現力と、どれをとってもその辺のディスクリート回路より良い。僕はこの石に出会ってディスクリの勉強をやめた。 Dec 11, 2019 · The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 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. Mar 17, 2019 · The OPA1641 would be slightly better. Even the bipolar OPA1662 would have a more suitable en/in balance than the stock LME49720. On the α24, this is a non-issue. opa627はdc、acスペックとも素晴らしい性能で、オーディオをはじめ計測器、医療機器などでここぞという箇所に使われていますが価格が高いです。 このOPA827はOPA627の性能を維持しながら価格を下げるという目標のもとシリコンゲルマニウムという新プロセス Mar 22, 2022 · Couldn’t get any of the ADI devices they had to be bought through E14 or RS of memory. They were around $30AU before landing in the country…. com) I have tested the The AIYIMA Tilear Rev 2. It wasn't noise in the sense of white noise or popping, or clipping. g. Oct 19, 2024 · and after the Muses opamps, the most expensive Opa627 - Opa637 comes in these opamps are very slightly cheaper than the Muses opamps, my favorite opampsMuses 03 Opa1656 Opa1612 Op 828 Opa627 Ad8066 Opa2134 Lme49720 Lt1028, i am also making dip8 adapters to run the opamps in parallel and conducting experiments on running the opamps in parallel. I'm looking for opamp better than OPA2604 witch big soundstage, and "analog" like sound? But e. 03. The Opa1656 has a much wider and better soundstage. Sounds like those are amazing though. 179599 second(s), 17 queries . OPA827 is also a great op amp for the signal path. The opa627 does not appear to have its own sound, though it might have deleted some sound, unlike the OPA2134 and AD825 that may add harmonics to the sound. I try all five opa1656 but the best sounding was using 2 opa1656 at the front and 1 opa1656 in the back, in the middle 2 opa2604 Opa1656 is the best I tried for Aiyima07 not Pro, the 2604 in that model meehhh Apr 21, 2019 · vs Burson V6 Vivid The V6 Vivid has a faster attack than the classic, but still not quite as fast as the SS360x which allows the SS360x to wring out just slightly more detail than the Vivids. 高音質電源改善アクセサリーを中心に、音響を中心に電気で世の中に貢献しています。 May 22, 2023 · I would give OPA1652 and OPA1656 (and maybe OPA1688) a closer look as well. It is now living in a Ayima a3 together with a opa627 (simply because I already had those). One other very noteworthy difference is the Vivid has a strong attack, but loses a bit on the decay so sustain is better on the SS360x. abandon BB's DiFet type of opamps ? The OPA627 replacement : OPA 827 , has only 0,5 V . zpo bwscn tlpw wblein oufwl rss fyegcg rmbao uhbrhmwc sldc