Opa1612 diyaudio review forum
Opa1612 diyaudio review forum. 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. Apr 17, 2021 · D90 III used two ES9039SPRO which is more than D90SE with one ES9038 and AVDD5V provided from OPA1612 DAC 1. The two 1612s that I have tested have offsets <150uv and the DC servo loop functions in the MC preamp. 6) Output XLR balanced, ideally if with a big-good permalloy trafo. ••• Jan 14, 2019 · I bought 10 OPA1612 from a chinese ebay seller. But I would have to convert the SOP8 socket to DIP8 first with limited space. Mar 1, 2016 · besides I would mention that, on diyaudio there is a quite intensive thread in the topic of modding of this board. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. OPA1612 and OPA1656 and I recognosize the blue backgroung in the back of the opams,could they Search Everywhere Threads This forum This thread Aug 15, 2014 · Wel I have tryed th model OPA1612 and it works in the 64 bit version, but not in 32 bit version, I get just offset and no amplifing effect. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Jan 19, 2023 · - 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 very fast opamp but therefore it is easy to get it stable Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. 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 Jan 6, 2020 · Hi Michael, I have read your interesting article in the March 2021 edition of AudioXpress. It has the most stable input capacitance vs. For the case of 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. or cracked solder joints due to the potting compound contracting/expanding over time. It turned out that these OPA1612 are cheap TL082 FET Opamps as you can see on the photos. . At this point noise and ultra low noise supplies might be the last area I should put more effort into for this interface. i expected them to put some Jan 30, 2019 · So, first thing I wanted to try is to upgrade the opamp in the LPF. Does this indicate that Sep 14, 2021 · 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. Aug 1, 2024 · And when I was making a Whammy headamp, I got by far the best sound with the Muses 02. 5v, i was searching opamps with +/-18v and in this days is verry hard too find what you want! Amplifier has 4 opamps and i'm thinking to put Ad8599/ad8066, opa1612 (but i can't find it) lt1469/lt1358 or dual lt1028/ada4627! I need some help for choosing the right opamp voltage! Thank you! Dec 28, 2018 · Nested feedback/ composite amplifier opamp requirements May 3, 2022 · Its not immediately clear what would upgrade NJM4580 which is already quite low noise. May 19, 2017 · Something better than the LM4562? Dec 11, 2018 · My plan is to use a PCM2707C for USB to I2S converstion, a PCM1794A will be used as the DAC and the amplifier stage will contain a pair of OPA1612 and a OPA1622. I found the Bass being sweeter, the fact you can juggle the equalizer is really fine and brings something very interesting. One S300iu integrated amplifier | Stereophile. It could sound pretty good, but one could get sound just as good from IC opamp designs. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Also they are very hot. 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. (requires good soldering skills, check user guide) Mar 17, 2019 · Hi John, Currently kind of assessing the OPA1656 following your excellent thread(s) - very modestly in some line output stages of my HIFI. 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 Mar 17, 2019 · The OPA1641 would be slightly better. Yes, I know everyone likes to think you need GHz op-amps for I/V. Dual customzied solution will give unmeasurable distortion (possibly -180db). May be OPA1612 is OK, I don't know. 7 V ADC input Mar 30, 2012 · I have a Crate VC508 guitar amplifier that many recommend modding by replacing the TL072CP opamp chip. Mar 17, 2019 · The OPA1641 would be slightly better. I have diyinhk es9038pro board and try muses8920 for i/v and LPF. Aug 3, 2019 · I have successfully assembled and tested them with OPA1642s and OPA1612s. 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. 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. Jul 4, 2021 · Sounds like you need some sort of EQ system to get the effect you want, opamps just all work the same, some are a bit noisier, some have higher distortion, but they don't do florid adjectives, just reproduce a signal to a high accuracy (if all is working well). Feb 11, 2021 · looks very similar to the eighth image from post #2 of Bel Canto's S300i/S300iu - driven by dual mono Icepower amplifier modules with switch mode power supply - go to Inside the Bel Canto S300i integrated amplifier | Audiokarma Home Audio Stereo Discussion Forums and Bel Canto e. Power it off, and check ohm values from pin 1 to 4, 5, 6 are infinitive. 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. I love details clarity, soundstage - listen to rock classical and vocals. Aug 22, 2007 · Hi Ryssen, Having had a quick look the data sheet of the LM4562 August 2006 and of the LM49860 June 2007, the differences I detected were at the end of the documents : no mention of "banned substance compliance compliance" at the end of the LME49860 datasheet. Yes, it's a very subjective question, so what I am looking is the highest class of sound -- In my opinion, also as said by Tangent, the openness and the cleaness of OPA627/37 put them into a higher league that OPA2604 and LT1364, both of which are very Jan 6, 2020 · Not long after AX published Michael Steffes composite OPA1612/TPA6120A2 design in March, 2021, I decided to give his circuit a try. Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. Jun 25, 2021 · Cherry's NDFL was realized in Pioneer's integrated amps A5 and A7 - go to New Cherry NDFL amp this thread I discover additional: Low distortion current driven Class-B output stage Post #95 under Review and Measurements of Purifi 1ET400A Amplifier | Page 5 | Audio Science Review (ASR) Forum and post #1 under Tear down of Neurochrome HP-1 High Dec 10, 2018 · Mark, thank you for reply good to know that you like OPA1612 as I/V for quality 24 bit dacs do you recomend to try It with not just only pcm1794 but also pcm63, pcm1704 what Is your choice for power supply to pcm1794, analogue and digital : Salas shunt, LT3042, ADM7150, cap multiplier what Is your choice for OPA used as diferential summator / low pass buffer - what do you think about OPA2132 Oct 25, 2018 · I've decided to change the gain opamp to the venerable OPA1612. And ADA4627, which appears intended as a direct replacement (a decompensated ADA4637 exists as well). I have a Technics MASH cd player with the SMDs type of opamps needed. I initially saw both the low input impedance and the signal inversion as potential drawbacks. - Choice is not permanent and can be changed by the customer via internal jumpers at anytime. I'd like to have a crack at making a decent DAC to level up my elec skills. This configuration is best for use in setups with a source/DAC capable of higher pre-out voltages. 2V came from the D2D IC on the left lower side. 1nV/sqrt(Hz) and 0. I'm hoping this community could be of help. He’s optimized the distortion for the OPA1612 into the TPA6120A2 for lowest distortion and that’s not what I’m about. 5 V) tends to be run inverting anyway since common-mode input range would be pathetic otherwise. Adding those capacitors at the input like in Denon 1560 (you need to find the perfect values yourself) can be done with any op-amp. The 1642 does not as the offset is too high. common mode voltage that I've measured on any op amp. 4vdc, pin 6 is about 5vdc only. Oct 7, 2020 · Hi :) I've a bit of experience with Altium Designer, C/PP, general MCU stuff, things like I2C and so on. Please refer to post #4603 The diyAudio First Watt M2x for my evaluation of the first set of opamps. (AIYIMA, DrMordor V1 + V2, Zero Zone, 3E Audio, Generic TPA3255; BRZhifi etc). In your simulations you seem to use a purely resistive load (32 ohm). Apr 18, 2020 · It has something for it (buffer, filter) but for I/V I liked the opa1612 a lot for an I/V task looking forward your review about this new one over the 1656a very good one for ears indeed. 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. While improving on the flaws, some of the IC's SMD legs gave up and broke off. That post includes system and program material information and a Jun 23, 2019 · 5) I/U OPA1612 or similar with 600ohm feedback resistor and some preliminary passive LPF before I/U stage(ES9038Q2M has quite big out-band noise). Aug 22, 2009 · I just noticed today on the TI web site that the OPA1611 (single) and OPA1612 are finally reality. Real low-voltage stuff (think 1. SQ was about the same as other ESS-based dacs in that class. The OPA2210 is a jewel ! I tested the OPA1622, OPA1612, OPA1656, OPA1692 The OPA2210 definitely worth trying as I said before ! (I sent a pair to another forum member to get his opinion as well) In any case, do not embark on this adventure without having good welding skills. 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. Apr 30, 2021 · It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211. Jan 5, 2020 · Of course, I do not go to use "special" $4 LDO from ESS when I can take opa1612 and get less noise. I got free shipping with Element14 till 29th of this month May 26, 2016 · AD8397 is great, just be sure to put 2-3 Ohm output resitor, wirewound 5W should keep the op-amp safe from shorting output to the ground. 8 bucks for a genuine part. OPA1656 sounded worst, Muses 8920 sounded best. TAITIEN 22M/25M in the center can be switched to DAC. Cheers, Greg ••• 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. Standard opamp for that has pretty much become OPA1612. Nov 9, 2012 · Has anyone ever had experience with MUSE opamps? Apr 7, 2019 · Unpopular opinion- If you are talking about measured performance in the audio band, it probably is OPA1612 or LME49720. Regarding a review, do you have a decent equipment to evaluate my ADC performance yet? Jul 5, 2006 · IIUC the folks at Sparkos designed the board for Allo or they collaborated on it. Use a simple resistor, or a J-fet with the IDSS trimmed to 3mA~5mA. 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. 5 V - single supply - I would not be surprised to find some common-mode issues. I've seen mention of these on various threads in this and other forums. Mar 5, 2018 · I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. Joined Dec 9, 2019 TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier Oct 8, 2001 · My choice would be OPA1612 oder ADA4898-2. I own almost all the TPA325X, see my reviews on Forum. OPA1612 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. My workshop is for fun and not to produce a product. Unfornately the 64 bit version crashes all the time after some time of simulation, I can not use it, and that was also the case past year, so I did replace the 32 bit version again and that works oke, reason I do not now, maybe mailing the writer of the May 2, 2020 · 3E Audio used the OPA1612 on their module after a series of tests it turned out that they gave better results than the other OP amps tested. Apr 15, 2023 · MUSES02 pricing? Apr 14, 2021 · Indeed, the entire OPA1612/42/52/62 series has proven to be great low THD solutions. Output pin 4 is about -1. Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. May 22, 2021 · There are many reviews of audio hardware and I know that you are also active in the thread on DIYAudio where I just posted OPA1612, 2 V, 1. Reactions: Phorize , August and Evgeniy 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. Tangent didn't mention AD826 and LT1364, which are my best choices. If a transient causes the op amp inputs to be pulled apart, the differential input voltage forward-biases those diodes causing a large input bias current. I also own some Hypex NCore NC502 / NC 500 and NC250 MP and a brand new Merus double Mono amplifier. 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. 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. I had read it many times before posting this threat. Custom Input Buffer Board w/: Jul 5, 2006 · Thanks for the link. 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. MFB, and Sallen-Key configuration Jan 26, 2024 · The Vendor's Bazaar forum is for commercial offers and transactions. On the other hand, you can add the OP amps of your choice in SE mode. 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. 0007-8%, then OPA1652 with 0. ••• May 19, 2004 · If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. The Nov 17, 2017 · I removed DAC from Pi and power it on, measure it. It enabled the use of better components (actual measured performance) that otherwise Jan 6, 2020 · So, you try different devices and measure. Several reference are used on forum. It has a strong output stage as well as JFET inputs. But both OPA1612 and OPA2134 has a common emitter output stage. 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 Jun 30, 2021 · I would like to thank Carlos from Burson Audio for making this review possible. 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. 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). He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. Gain stage combined with LPF 50-80kHz, OPA1612 probably composite but not necessary yet. Even personally me did a lot of changes (change all the L to separated regulators, change the output to I/V stage (47920), add Salas Power supply to analog add a special OPA based regulator to AVCC (own design) change OPA to 47920 Jan 26, 2022 · The amp remains totally silent even with its volume at maximum. MUSES8820 is the best, IMHO. Oct 29, 2009 · Even for audio use there are a lot of different applications like - line stage low gain/unity gain (buffer) - line stage, high gain (microphone amplifier) - RIAA stages with RIAA in the NFB network - power amp front end (two versions - signal pad by output and by power supply rails) - two version of low pass/high pass stages in active crossover networks (e. Use of this facility is at your own risk. I don't care about listening tests or something else, just want to use the technical better one in my amp. Apr 8, 2021 · LEAF Dual 9038Q2M VS Gustard X16 pictures inside diyAudio diyAudio Dec 12, 2019 · opa2211 SO-8 Powerpad Exposed Pad Sep 14, 2021 · This leads me to believe there could be an issue caused by the back-to-back diodes across the inputs of bipolar (LME49990, OPA1612) and CMOS op amps (OPA1656). May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. g. Jul 26, 2020 · On Head-Fi forum they say OPA2209 is better than 1612 & Burson. 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. Aug 29, 2019 · maybe micro degradation of one of those opamps, ne5532 is very reliable, not sure of that opa1612 tho. 0006%, closely followed by OPA1612 (though a bit unstable) with 0. I went through several iterations and settled on JFET buffers to raise the input impedance. I will have a listen to various op amps, old favourites and newer ones, from AD, LT and yours because your triggered my curiousity and all your efforts deserve it for sure. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Nov 2, 2010 · Try a pull-down load to the negative supply rail to force the NE5532 into class A, just a few mA will really make it sound better. Jan 8, 2023 · For +/-16. It's a VERY good bipolar junction opamp with incredible specs. Apr 14, 2021 · Makes me wonder I bought (Have not gottem them yet) OPA1611. Nov 21, 2019 · Not great current noise alas, probably unsuitable for MM phono amps as a result, but look decent performers otherwise. The high bias currents responsible for the high current noise will cause issues in many circuits with offsets too - pretty much every stage needs ac-coupling with that sort of bias. i should have used jumper wires instead, so i can take a thermal photo of the underside. I didn't investigate further, and I didn't have the OPA1656 nor the 1642 to try. Maybe it's too soon for anyone to have obtained and evaluated samples, but -- well -- has anyone yet? 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. I opened one SO-8 package and put it under the microscope in our workshop. 8 or 2. In that case, for example, the Sparkos SS3602 sounded very sharp, the OPA1612 oscillated like crazy, and the OPA2604 and TL072 were very dark sounding. You should go with opa1612 all the way, in both i/v and filters once you're upsampling . Last edited: 2020-10-05 9:04 pm More options 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. It turned out that in my internally developed Wien bridge oscillator, with the lowest THD-N, LF4562/LME49720 showed 0. Pin can be left floating or connected to any voltage between (V–) and (V+). Wouldn't it be necessary to check the stability with a complex load, at least with a capaci Mar 17, 2019 · I wasn't complaining about the OPA1611 , just as an example of bipolar NPN input opamps , like the OPA1622 , or AD797, NE5532, OPA1692, Anyone know whether the LM4562-LME49710-LME49860 series are PNP input or NPN . Feb 4, 2014 · In places less hospitable to LME49720, OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. Jun 5, 2023 · Just because they are not fake doesn’t mean they’re ”good” - they may be fall outs that don’t meet spec. 3 MHz. 7 EUR at Mouser. 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. Last edited: 2021-03-30 4:29 am Jan 7, 2020 · There are many reviews of audio hardware and expert members to Forum Donor. Now I use OPA1612 for i/v and LPF, distortion is gone but sound is flat. Input pins 1, 2 are ok (5vdc and 0v). Oct 12, 2020 · I am member of diyaudio. not just because they are so clean, there is that, but so are the others I mention, but I dunno, I just find there is a difference between clean and sterile. We do not vet any members. This is why they cannot be updated on this module in differential mode only. It's supposed to be a stright up replacement but it's about a third of the size. TI/Burr Brown's OPA2604 is a good alternative as well. May 19, 2004 · agreed, but I just couldnt help myself in this instance. May 8, 2011 · Speed is an issue, though. If changing the opamp to this one doesn't make a difference, nothing will. Something like that. If you're prototyping - be sure to apply power at the same time, if your ground connection fails - AD8397 will burn, JRC4556 is virtually indestructible compared to AD8397. 9018 request one reference clock and use internal PLL. Sound is very good, especialy a voice but sometimes I hear a little distortions. 0009-10% but with a much more stable response May 26, 2020 · I can see that a lot of hobby builders tend to use the discrete solution, but I can also see that some of the high-end Op-Amps are hitting distortion and noise figures that i would think is hard to beat like the OPA1612 with its 1. 000015% THD or the OPA1642 if JFET is the way to go. I'm at the first hurdle, finding accurate footprints/models to Jul 25, 2016 · Hello all My Marantz and most of my CD players have the LM4562 which I find is great. Mar 17, 2019 · For audio use, I see no reason to buy OPA627 when you have OPA827, OPA828, OPA164x, and OPA1656. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. That circuit will work very well with any dac that outputs 1ma . I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. 80 EUR for all ten. OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. OPA1692 seems better than OPA2209 Little review Sometimes I change from OPA2209 to OPA1612 to Nov 17, 2017 · I'm trying OPA2134, witch output stage is the same as OPA1612, and I'm not satisfied at all. With a low price and nevertheless minimum THD. Generating higher levels of H2 would be fun. Dec 8, 2023 · Welcome to SylphAudio thread! Our New Product Release Roadmap for 2024 **** SE800 PFFB High Power Class-D Amplifier Supply Voltage: dual ± 25V min, ± 85V DC max Unclipped Power ( Mar 17, 2019 · And I would bet that the amplitude of each step is too small to actually reach the slew rate of the amplifier. 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. Jun 8, 2023 · Some members in the Pass Labs forum section used my design in their First Watt clones with the same conclusion. I've dropped the 1612 into a preamp and it passes music. com In no case did I have too high expectations regarding the sound Dec 9, 2019 · Home: RME ADI-2 Pro FS R BE—Neumann KH80 DSP, Arendal Sound 1723 1S Work from Home: JDS Labs Atom—Etymotic ER4SR, AKG K371, Sennheiser HD820 Measurement: Earthworks M30 (Reed R8090)—Earthworks ZDT 1021 — RME ADI-2 Pro FS R BE — REW 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). Jul 5, 2006 · Since CMOS parts tend to top out at a mere 5. A couple of things surprised me a bit. Remember, to actually hit the specified slew rate of an op amp, you have to create a large enough voltage between the op amp inputs to direct 100% of the tail current into the compensation capacitor. I noticed a low-cost headphone amplifier board based on Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. They are ~6. Replace the OPA1612 with the rediculously pricey Sparkos SS3602 (690 RMB €80). LME in other hand, has common collector, so it is better for loads like DAC AVCC, I believe. Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files. mainly because although the 1611/12 series are technically very sound, I find them boring as hell. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as Apr 7, 2019 · Rs can be also in series with both RC which is a tiny bit better. Pin 2-4 are 130ohm, 2-5: 0ohm, pin 2-6: 4300ohm. and some other Class d and Class H amp. 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. The plan is to build the amplifier stage directly as described by TI in their reference design tidu672c Voltage conversion for the PCM2707 and PCM1794 will be done by two LP5907 Mar 27, 2023 · - Buckeye buffer stage (OPA1612 OP Amp), allowing for Low/Med/High gain settings via toggle switch on the rear. So i expected to get fakes but i wanted to know it for shure. Feb 17, 2023 · Hello, guys. May 15, 2022 · Buggle2 Riaa board. But, for me, I simply don’t care for monolithic OPAs. 9038 recomendation is OPA1612, OPA1656 OPA1611, OPA1612 www. 5 metre cable at 33. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Also, I using CT7601 USB UAC2 because of cheaper and less current draw. TL074 is easily surpassed by OPA1644, that's a no-brainer. The TL072 is around a half inch rectangle with 8 legs going into a socket. I got a TI NE5532 off ebay. com. For a lot of these op amps, the parameters which fall out of spec may not make a hill of beans difference in an audio circuit, but make them useless for instrumentation. I payed 6. "With the 4 OPA1656, compared to the AIYIMA TPA3251. diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. 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. Just check the rails aren't over +/-18V. ti. Only unmoderated members can post here. It's quite different from previously ESS chip since 9018. 0000x distortion and so on). itqzqv mhoo wpisf swbuw ltepmd zwltc nbmb ihbaum patcuad ctvya
Listen Live