Opa1612 diyaudio review audiophile

Opa1612 diyaudio review audiophile. Feb 11, 2021 · 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 a really good op-amp. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Transients are stronger, both rimshots of snare drum and big-band trumpets. I payed 6. 90 mm × 3. Dec 6, 2018 · Newer so-called audiophile op-amps have a higher bandwidth, than the traditional ones, so are more sensitive to board layout and can easily oscillate. BTW, last year I crippled my €4. OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. Jun 5, 2023 · 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, sometimes as just an unannounced "impartial" observer to listening/comparison/"shoot out" sessions. It's a VERY good bipolar junction opamp with incredible specs. I'm using the OPA1612 dual opamp in a commercial design. 9A of that) May 3, 2022 · Its not immediately clear what would upgrade NJM4580 which is already quite low noise. But I would have to convert the SOP8 socket to DIP8 first with limited space. Sep 14, 2021 · 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. Poweramps: Accuphase P-300. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Resistor values were right according to this schematic. (super audiophile!) Community platform by XenForo Jan 26, 2024 · Audio amplifier device review: Fosi Audio ZA3 This is the second review I have written relating to a product from the FOSI brand, the first was relating to May 8, 2022 · I am not certain that would be an good idea: The MJM4558 should have a gain-bandwidth of 3MHz whereas the OPA1612 has 40-80 MHz (depending on amplification). I had been thinking about trying out some of the Burson opamps and saw on these pages that Burson would send opamp samples for an honest review and good to his word Carlos sent me 2 V5i-d opamps to try and review. Replace the OPA1612 with the rediculously pricey Sparkos SS3602 (690 RMB €80). Jan 30, 2019 · So, first thing I wanted to try is to upgrade the opamp in the LPF. If changing the opamp to this one doesn't make a difference, nothing will. Thanks in advance. Just did an A/B with 2 opamp buffers on my Hypex NC500 monoblocks, which I normally use with no buffer, as the dac has enough gain to drive the NC500 modules direct. I checked all resistor values according to the following OPA1611(single version of OPA1612) schematic and found out that the 8200pF capacitors were actually 220pF(marked on board as 820pF) and the 2700pF were actually 270pF(marked on board as 270pF). org OPA1656 is a great alternative to OPA1692 as well. Apr 15, 2023 · MUSES02 is currently $44 each plus shipping at Mouser. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. Jun 8, 2023 · THD=-117. OPA1612 Apr 8, 2021 · Hi amigos, I share with a quick review of an unknown new DAC. i expected them to put some Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. I don't care about listening tests or something else, just want to use the technical better one in my amp. 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. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. The OPA1612 comes in a SOIC-8 package, and the NJM2068D is old-school DIL package, so I first used a small PCB to convert it to DIL. Mar 1, 2014 · And now the questions: What is the function of each capacitor? The circuit board that was not completely clear to me. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Oct 25, 2018 · I've decided to change the gain opamp to the venerable OPA1612. I opened one SO-8 package and put it under the microscope in our workshop. Please refer to post #4603 The diyAudio First Watt M2x for my evaluation of the first set of opamps. Feb 11, 2021 · 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. CMRR is not a big issue. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. Mar 3, 2024 · Technically, the use case isn't audio - it's radio - but I thought you might be interested in this quick review. 1 Orginal Fostex Suggestion for the FE103 (134*270*171 with a 50d/m*45 port) Comment: Too small for significant bass probably. 7 EUR at Mouser. That post includes system and program material information and a Oct 22, 2019 · On the board i have, the 220uf caps measured around half that, and i bet that POS ChongX cap will be similar. Cheers, Greg ••• Jul 26, 2020 · OPA1692 seems better than OPA2209 Little review here : The Opamp thread | Page 392 | Headphone Reviews and Discussion - Head-Fi. 000015% at 1 kHz. Anybody know where to get genuine MUSES02 instead of fakes at a lower price? 4 x 44 + 8 shipping = $184 for four op amps plus tax so ~$200. 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. That said, I have what some might term as a "trained" ear Jan 11, 2019 · 2. Features Headless music server OS Bitperfect and gapless playback of common audio formats up to 192kHz/24bit Automatic configuration of music player for Jul 5, 2006 · Hi All, Please advise what would be the best bet for a modern replacement of the NJM353 in my 12-15 years old vintage 4X60W Class A Zero Feedback car amplifier? Tried dual OPA627AU on adaptor but the sound is of reduced volume, of loss details and PCB is warmer than before and the noob in me did not realized the input current of 7mA X 2 or 14mA for the each of 4 dual adaptor as compared to Apr 26, 2018 · Mark Johnson Opamp Evaluation Round 2 Mark Johnson kindly sent me a second set of evaluation opamps which I was very happy to listen to and review immediately upon receipt. I noticed a low-cost headphone amplifier board based on • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. May 19, 2017 · An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. 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 Apr 16, 2021 · I wonder if the OPA1612 are like this: Fake OPA1612 from China I have done similar small test batches and examination of some other components such as solid polymer capacitors, polypropylene capacitors and certain difficult to obtain very low noise transistors. Members Market Swap Meet Group Buys. Opa1656 has good phase response at high frequency. (Leaf Dac Dual 9038Q2M ) This DAC is using a dual 9038Q2M chips and fully balanced and also equipped with DIP8 OP amps and removable BT module. 1-nV/√ Hz noise density with an ultralow distortion of 0. He’s optimized the distortion for the OPA1612 into the TPA6120A2 for lowest distortion and that’s not what I’m about. Jul 24, 2017 · OPA1612 has like an 80 MHz GBW and 40 MHz fT while being run at a gain of 3, while NJM4556AD is an 8 MHz part. Feb 25, 2023 · Note that the op-amps are 4 x OPA1612, not the ones shown in the picture. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. OPA1656 sounded worst, Muses 8920 sounded best. 1. • Wide Supply Range: ±2. 5 V - single supply - I would not be surprised to find some common-mode issues. Check out hifi compass for measurements and reviews, scan speak has their new elliptical driver which are bound to be excellent, seas have their latest with funky coatings, SB textreme should be high on your list too. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. 25 V to ±18 V Device Information(1) 2 Applications PART NUMBER PACKAGE BODY SIZE (NOM) • Professional Audio Equipment OPA1612-Q1 SOIC (8) 4. 3. It is using the same chips as the Soncoz SGD1 ) At first sight, the DAC is really really Mar 17, 2019 · For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. The speaker is very directional anyway, so the relativly broad box will not create interferences, but the case can May 8, 2011 · Speed is an issue, though. Harmonic distortion <0. Feb 11, 2021 · Dont make me laugh, if you can't hear the difference 5532 vs OPA1612 than you should not be very concerned about SQ (in your case). ••• Jan 14, 2019 · I bought 10 OPA1612 from a chinese ebay seller. It could sound pretty good, but one could get sound just as good from IC opamp designs. 5RQ Balanced Power - Tascam CD200 - Oppo 93 - Auvio HD Radio Tuner- MiniDSP OpenDRC-DI DSP, 2x4HD - AcourateDRC - UMIK-1 - ECM8000 - REW - Behringer DEQ2496 - Behringer UMC202HD and Focusrite 4Pre USB - Benchmark DAC2 HGC - Krell KCT pre and FPB 350mcx monoblocks - Sennheiser HD650 - MartinLogan reQuest 15" x 48" electrostatic hybrid with 12" sealed woofer 180Hz cross Jan 24, 2002 · Bassreflex 1. WITH HIFIMAN 400. PCM1794, OPA1612 . Jul 5, 2006 · IIUC the folks at Sparkos designed the board for Allo or they collaborated on it. Jan 6, 2020 · So, you try different devices and measure. 15ppm, intermodulation way below that, 1. 5 V) tends to be run inverting anyway since common-mode input range would be pathetic otherwise. ) to output power FETs. However, on what do you base your assertion that Neve has obtained the best sound possible out of the TPA6120, and so, has given the audiophile world a tough lesson? Is that only a specifications based opinion? Are there audiophile reviews somewhere? If not, is that opinion based on your own personal listening evaluation? Nov 17, 2017 · I'm trying OPA2134, witch output stage is the same as OPA1612, and I'm not satisfied at all. Above should be applied to all components - not only CD players. Feb 13, 2014 · Audiophile CD player costs at least $10,000 Anything less than $10,000 doesn't sound good at all. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. Nick ••• Feb 11, 2021 · 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. 8 bucks for a genuine part. My first tests were with an OPA1612 (equivalent to OPA2211) in the instrumentation stage, but I didn't manage to get the circuit ringing free under all circumstances due to sloppy wiring, decoupling and grounding. My main goal was to find a decent power supply with the following requirements: 5V @ 1A (and I need 0. It works, and I like the way it sounds, but the volume control issue is annoying. TL074 is easily surpassed by OPA1644, that's a no-brainer. DAC. More options Share The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Mar 17, 2019 · The OPA1641 would be slightly better. Something like that. It turned out that these OPA1612 are cheap TL082 FET Opamps as you can see on the photos. 707dBc=0. 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. 000 (DIY!) tube preamp with tube Mar 9, 2023 · 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 May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Best regards! Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. Real low-voltage stuff (think 1. TI was going to discontinue the LM4562 and others as well. As I have written I have very good experience with the lme49600 + lme49720 combo. Jun 5, 2023 · 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. ••• The OPA1612-Q1 device is available in a SOIC-8 3. 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 600 ohms, but the System: Equitech 1. Dec 10, 2015 · A fair question! And although I was the product definer and systems lead for this part, I don't get 100% control over the marketing folks But, I can honestly say that when we started working on this part about a year ago, I was very adamant that I didn't want to create a part with excellent specs but terrible sound quality in the real world. Aug 21, 2019 · By swapping TL071 for a OPA1612 you get extreme low THD, so limit shall be the implementation at al. 31 ) (353*546*227) Comment: Not to be overlooked. Modded TPA3255 with modded Meanwell PSU. Not willing to pay that. Mar 17, 2019 · TI's SoundPlus opamp family are astonishingly superb designs. 80 EUR for all ten. Mar 14, 2010 · Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. My workshop is for fun and not to produce a product. LME in other hand, has common collector, so it is better for loads like DAC AVCC, I believe. If a circuit isn't designed for such a high bandwidth op-amp, then blinding replacing the op-amp with a faster one is asking for trouble. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. Speakers: Philips 9710 fullrange. Pin can be left floating or connected to any voltage between (V–) and (V+). Jan 7, 2020 · TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier with 1. Swapping might (not "will") cause oscillation as the PCB and decoupling designed for the slow '4558 may not be up to the task with the much faster '1612. . Diy DAC/amp with PCM2707 Oct 29, 2009 · Ah, I wanted to mention that I've also tried a few discrete opamps: OPA-Earth, OPA-Sun and OPA-Sun V2, from Audio-GD. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. So i expected to get fakes but i wanted to know it for shure. The device is specified from –40°C to • Rail-to-Rail Output +125°C. With a low price and nevertheless minimum THD. Now even 40 MHz / 3 clearly is not < 3 * 8 MHz, so that won't work out without some local feedback across the 1612 to reduce GBW, usually in the form of a small capacitor. While improving on the flaws, some of the IC's SMD legs gave up and broke off. May be OPA1612 is OK, I don't know. But both OPA1612 and OPA2134 has a common emitter output stage. It enabled the use of better components (actual measured performance) that otherwise Mar 17, 2019 · Voltage noise is higher on 1656 at low frequency til 1khz. Being that has 4 inputs and 4 outputs, as follows: channel 1 and 2 balanced inputs channel 1 and 2 balanced outputs channel 1 and 2 balanced direct monitoring MIDI input and output SPDIF input and output I believe that the capacitors are 22uF coupling / decoupling (IN,OUT Nov 2, 2018 · Many of us experimenting with many different power amplifiers run into the problem of needing a pre-amp for test that can handle all power amplifiers concerning input level and impedance. 5). It's best use as an alternative to opa1612 when noise is not a big concern. At this point noise and ultra low noise supplies might be the last area I should put more effort into for this interface. Sansui AU-517 (modded). Jul 5, 2006 · Since CMOS parts tend to top out at a mere 5. SQ was about the same as other ESS-based dacs in that class. Purifi have a dedicated 4" midrange in the works, not sure if it's public or out yet. Standard opamp for that has pretty much become OPA1612. The best is to spend around $20,000 to get high-end audiophile gear. 2 Orginal Petite I ( L'audiophile Nr. Nov 9, 2012 · A little background As a 35+ year audiophile and (past life) high-end audio manufacturer (about 15 years) I have spent literally thousands of hours evaluating the "sound" of passive and active components -- from toggles switches (differing metallurgy, plating etc. Benefit is lower dc offset and less distortion also high open loop gain also superior stability. May 15, 2022 · Featured Vendors The diyAudio Store Parts Connexion miniDSP DIY HiFi Supply. 1nV/root Hz at 1kHz with a 10Hz 1/f corner and will cheerfully drive 600 ohms. Generating higher levels of H2 would be fun. NE5532 is a very good amplifier especially for the price ($0. For the case of Jul 30, 2013 · Call for testers! Daphile is an audiophile class music server & player OS – targeted to dedicated headless PC. IMO, spending large sums on Mundorf, Audio Note, Audyn Dec 6, 2018 · Newer so-called audiophile op-amps have a higher bandwidth, than the traditional ones, so are more sensitive to board layout and can easily oscillate. It has the most stable input capacitance vs. Power rails were hardwired with Kimber TC cable. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. 8 or 2. OPA1611, OPA1612 www. no point in buying some crazy expensive 'audiophile' caps, just some quality low ESR caps with long lifetime from a manufacturer like Nichicon, Rubycon, Panasonic, Elna, EPCOS, etc. The OPA-Earth was tonally dull and midbass lacking, the OPA-Sun was mechanic in the mids, the OPA-Sun V2 was the best sonically but produced a whopping 375 mV of DC offset where all of the chip opamps produced none. 6 mA per Channel package. They are ~6. ti. But that does not say anything about the SQ. I was surprised by the quality of the Audiophile Lounge internet radio (320 kbps mp3) playing similarly to a live quality flac music source as OPA1612 was replaced by the Burson V6 Vivid. 1nV/√Hz Noise, Low THD and Precision. 91 mm Oct 14, 2021 · If you're keen on a a woofer midrange. What's not to like with that, and all the other SoundPlus family? Craig ••• Feb 22, 2019 · OPA1612 V6 vivid The Moode audio player 6. Jun 30, 2021 · I would like to thank Carlos from Burson Audio for making this review possible. 000130% Although the price was also cheap, It is a pity that NS was absorbed by TI and was abolished after losing the brand power competition with BB. Jan 30, 2020 · Very well. Dec 11, 2019 · It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211. Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. common mode voltage that I've measured on any op amp. Maybe far from audiophile but I like the really clear sounding with nice stage (driven by an old CD and a modding ed. Aug 30, 2012 · the OPA549 datasheet has no useful audio distortion curves the related OPA541 does - and shows the worst possible distortion profile for audio - the distortion rises at low levels indicating output crossover distortion most specialized audio chip amps show low distortion at various power levels with much better profile than OPA541 LM3886, other audio chip amps have more loop gain due to Dec 11, 2018 · Featured Vendors The diyAudio Store Parts Connexion miniDSP DIY HiFi Supply. 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. But, for me, I simply don’t care for monolithic OPAs. Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files. The trick here is that the transistor section already has a gain >>1 set by R10/14 and R11/15 so you can run the OPA at low supply and output. Aug 21, 2019 · Im sure real audiophile uses discrete elements but you can reach good result with ICs too. I am using the digital coaxial input and the left-right RCA jacks output to my Dynaco ST-70 series ii amplifier. 0 was my music playback (as usual) for the Raspberry Pi 3B+ single board computer. zvzdvi gqnvqn gthem zrkn dyw ponv pdveov lgrir dndem bldrhaq