Opa1612 review cn zhcsdf7c –july 2009–revised august 2014 5 引脚配置和功能描述 d 封装 opa1611，soic-8 d 封装 （顶视图） opa1612，soic-8 （顶视图） drg 封装 opa1612，son-8 （顶视图） (1) nc 代表没有内部连接。引脚可保持浮空，也可连接(v–) 和(v+) 之间的任何电压。 Dec 7, 2023 · Input Opamp Change to OPA1556,this is due to part unified that we found it perform the same as OPA1612 in another project. now lets see and talk about my Audio Gears for testing V5i: with dual to mono adapter somehow I managed to install the 2 V5i Single inside the well known LD I+ hybrid tube amp. I found it to have better dynamics than the OPA1612, but not quite as dynamic as the MUSES01. Jul 4, 2021 · This looks like a stock implementation of the pcm1794 datasheet output stage. 000015% at 1 kHz. As with last generation, the A20 comes in gorgeous packaging that completely sets it aside from its competitors. ;-) I, too, await samples. All thoughts and experiences with the product are naturally my own. Since your L/R channels already feature the Oracle II 02cohesive overall sound, complementing the Oracle II op-amps. 00009-0. 16dB. 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 May 25, 2020 · The input impedance is low enough to take care of interference. I use TPS7A4700 and TPS7A33 low noise DC to DC converters with 4 µV/16 µV noise. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. From the datasheet, it looks as if any hopes of PDIPs have vanished, again I'd guess that the large customers don't do PDIPs anymore. ) Your measurements of the OPA1612 and the Sonic Imagery 990 were the same? The OPA1612 are not exactly "cheap" but not so expensive and those discrete opamps Feb 5, 2017 · テキサスインスツルメンツ（バーブラウン）から発売されているデュアルオペアンプです。NPN入力で、アプリケーション例として「業務用オーディオ機器」「放送スタジオ用機器」「オーディオ試験機器、計測機器」などが挙げられています。1回路版のOPA1611もあるようです。 Apr 21, 2019 · SparkOS Discrete Op-amps SS3601 and SS3602 with comparisons to Ne5532/5534, Muses02, Burson v6 Classic, and Burson v6 Vivid op amps 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. Apr 8, 2021 · I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. Jul 4, 2009 · OPA1612 is relatively new opamp and is widely used in several medium-priced but also high-priced DACs. At the time of this review the 1x V5i Dual is selling for $39 + shipping. It’s priced at $179. The OPA1612 is used by Topping/SMSL and I believe Gustard is using it too and also in the Latest Topping Preamp that everyone is gossiping about…. Pin can be left floating or connected to any voltage between (V–) and (V+). At least -120db thd performance. Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Apr 1, 2025 · The new Purifi 1ET6525SA is finally live for ordering on our website! The 6525 serves as the direct replacement for the 1ET400A. Jan 2, 2023 · OPA1612 dual OPA is about $60 USD for 5 from Audiophonics. 33ohm. However, the original OPA1612 remains a popular choice for many audio applications. Dec 11, 2019 · It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files Aug 22, 2009 · Reminds me of one of my favorite phrases from an equipment review in The Absolute Sound years ago: "subtle, yet dramatic differences". Power is provided through 2 OPA1612 Oct 31, 2020 · You can find OPA1622 and OPA1612 here, in DIP8 here : Audiophonics is 100% sure, 100% Genuine OPA1622 AOP Double DIP8 (Unite) - Audiophonics OPA1612 AOP Double DIP8 (Unite) - Audiophonics OPA1656 and OPA1612 are the best I tested with the TPA3255 / 51. if you don't sit with the volume at 0db the whole time the OPA1612 might be a better choice AKM certainly thought so. That would be 210 different combinations. 1 nV/√Hz noise density with an ultra-low distortion of 0. Here I am, finding a new platform to allow me to speak openly and freely. add a optional 12V connector (not populated) for some people that need for power LEDs,etc. No other compensation was offered or implied. Jan 27, 2021 · Maybe you're being a bit unfair. TPA6120 Headphone Amplifier: Powerful headphone-driving capability for both low- and high-impedance headphones, ensuring impactful sound and pure audio quality. I doubt I will jump up enough to try a Sparkos or Burson. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. Jun 23, 2019 · The LME49860 has better figures for imd and thd+ noise at 5v output level, then it goes off a cliff in either direction and performance is worse that the OPA1612. lt also provides high output drive. 5mm adapter. 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 Nov 20, 2024 · SMSL continues to release model after model and in this article, I review the new SMSL DL100 DAC and headphone amplifier. It's just extra $10 for 3 opa1612. Mar 22, 2022 · The OPA1612 is one of the best I’ve ever encountered, the LME 49720 are hard to beat at any price……. These sound great and outshine many of the other modern high performance audio opamps out there today. If possible, you could try all of the three op-amps from above without getting worried to get oscillations. This configuration is best for use in setups with a source/DAC capable of higher pre-out voltages. 35mm to 3. I hear OPA828 is the new version of the OPA627, so I may try that one out. The board is the same, but using different opamps. Dec 11, 2019 · Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. OPA1612 bipolar input op amp having ultra-low distortion 0. That one would be interesting to test. Btw the frequency compensation is used according to the designer in order to get it stable. But that does not say anything about the SQ. The right up OP is OPA1612 used to converter as single-end. 0001% less than a half distortion at 6500hz (maybe even lower because that's about the limit of my measurement rig). Sounds like those are amazing though. Assign an op amp symbol that uses just the 5 pins. Feb 6, 2018 · To think that Shanling would opt for cheaper amp just to save a few bucks (the opa1612 is less than $8 a piece), they've made a very poor decision by jeopardizing the performance of otherwise a great product. However it was apparent that the OPA1612 noise performance was not met in the CD753, probably in part because of the CD753s external to the op amp feedback resistor and this adds noise (see OPA1612 datasheet). 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. Based on the use of OPA1612 in DIP8 and high-fidelity RIAA equalization Jun 1, 2024 · Build Quality The R07Plus has an aluminum body giving it a hefty weight but sleek design. May 22, 2023 · OPA1612 . Jul 4, 2009 · Yes, go for established classics opa1612, opa1642. 4k. I agree with it. Thanks in Mar 5, 2018 · Hello everybody, I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. Thank you Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Digital Mixer shootout, need some inputs/review regarding: Behringer XR18 - Midas MR18 - Soundcraft UI24R upvotes May 19, 2017 · An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. 1-nV/√ Hz noise density with an ultralow distortion of 0. Nothing really new or innovative, just the beaten track that we have seen in numerous similar Today we look at the Topping DX7 Pro, which is selling for $599 USD or €599,99 Euro. Dec 17, 2023 · 1. lt has the characteristics of low distortion, low noise and high conversion rate. It retails for $499 USD. Tangent didn't mention AD826 and LT1364, which are my best choices. I had read it many times before posting this threat. The display is Aug 13, 2014 · The only ones in the OPA that I liked was the ones I obtained free fron the BB site via there R&D program such as the OPA1612 . I would recommend trying opa1612 for people who havnt had a thought about it. I don't like the highs of OPA1612 though, they sound artificial to me. FiiO is one of the most popular, audiophile-oriented companies in the world. Bedroom: Topping D90 MQA + Topping A90D + Mackie MR6Mk3 + Mackie MRS10mk3 , Motu M4 , Focusrite Clarett 2PRE USB Sep 4, 2023 · In this article, we review FiiO’s latest all-in-one unit, the FiiO K9. ADI 825 or any AD requires strict rules for it to operate in due to low PSRR. Jan 17, 2025 · The Fosi Audio Box X5 phono preamplifier is a small, high-quality device that accepts MM and MC cells. I feel relaxed when the opa627 plays and it nothing lacks in terms of detail etc. Taking a lead form "rolling" tubes in tube products, a trend has started in replacing op-amps -- sometimes with much difficulty -- to improve performance of solid state products like DACs. I also have both the OPA1642 (FET-input) and the OPA1612 (bipolar input) in stock and I think these would be interesting candidates as well. Mar 17, 2019 · But for MC phono pre-amps a low noise bipolar input op amp like the OPA1612 would give the best noise performance. It is a little bit cleaner and perhaps because of that instruments are more defined in space. Click to expand Thanks for that recommendation. It costs $849 USD from FiiO, directly. As such, I tested it against the Topping D50 DAC which also retails for the same money. As it is, if it measures worse than the eval1's buffer (fe02 iirc) which uses the Opa1612, is it because the buffer board is overall inferior or only the opamp? Jun 20, 2023 · The original OPA1612, the Sonic Imagery 990 ENH and the Sparkos SS2590 (which are different to the other Sparkos people buy for this Fosi or Aiyima amps. 1ohm or 0. Ref. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. OPA1612 can easily supply 30mA so loads above 150ohm are fine. It retailed for $249 when it was shipping. It uses a single ES9068AS DAC chip by ESS in a fully balanced configuration with five OPA1612 op-amps in a typical Chi-Fi implementation that is used by brands like SMSL and Topping. NE5532 is a very good amplifier especially for the price ($0. The review was so precise and fluid that it convinced me to buy the Aroma amp stack. Each channel has 4 outputs summoned, thus lowering the already really low noise by around -6 dB. FiiO Company. 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 7, 2023 · This is a review and detailed measurements of the VTV Purifi class-D amplifier with the optional Weiss OP2-BA Op-amp (buffer/input gain stage). A few months ago I Therefore, the OPA1612 simulation model really only contains one op amp having the pin order of the single OPA1611 op amp. 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. Oct 14, 2024 · I will quote AI on this when asked for the choice between OPA1656 and OPA1612 for the XLR: 1. Jul 4, 2009 · OPA1612 otoh has the best sub bass performance I have heard. 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. As Jul 4, 2009 · 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 them in bulk (we’re talking 100s to 1000s) and Aug 11, 2023 · Thank you for your review. --- my original Topping EX5 Review. However, I found D10b sounds terrible with LM4562. Feb 4, 2023 · Of course. Dec 14, 2020 · But then, I have a problem with SMSL cheating with its specs (and corresponding price, as OPA1612 are quite 'expensive' chips) . Feb 4, 2024 · This is a review and detailed measurements of the Purifi 1ET400A Class-D amplifier module. Jan 7, 2021 · The different players sounded different. Well, all that I can tell them is ASR is a madhouse that I cannot understand. Sound more "musical", I like it. They probably used the stock resistors values too, which are too low for the tl072 to work comfortably. Some users prefer OPA1612 for its sound quality, while others suggest MUSES8820 as the best option. It is on kind loan from a member and costs US $2,090. 5k Ohms which is what you get with a 10k pot when set to the electrical mid position if fed from a low source impedance - this is typically what you would see in a line preamp taking in CD, DAC or a phono preamp. Also about component tolerances, i tested a few opa1612 before and today both opa2211 and opa1612 performed just identical. 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 Jan 7, 2025 · This edition incorporates two ultra-low phase noise femtosecond audio clocks and OPA1612 operational amplifiers, ensuring superior audio synchronization and signal amplification. Originally posted on ASR. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. All observations and opinions here are my own, based on my experience with the product. This is also AKM's recommended opamp in many AKM DAC's in both IV and LPF stages. Mar 27, 2023 · - Buckeye buffer stage (OPA1612 OP Amp), allowing for Low/Med/High gain settings via toggle switch on the rear. Based on the use of OPA1612 in DIP8 and high-fidelity RIAA equalization Jun 7, 2016 · I received a review sample of the Burson Audio Supreme Sound Opamp V5i in exchange for my opinion on it. Last edited: Apr 15, 2024. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Oct 27, 2022 · It sounds different from the Drop Signature version (I have no idea how the V2 Signature sounds like), in that it's less laid-back, less outright warm, but yet maintains a palatable mid-to-high treble free from digititus common in the higher-end ESS + OPA1612 designs built purely to score well on SINAD graphs to the tenth of a decibel. I just reviewed the same amp but with SIL 994EnH-Ticha Pro buffer so you can compare them. May 21, 2023 · Beginning with the OPA2134PA, this is a good all-rounder with a nice stage and resolution. Jan 28, 2018 · 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). OPA1612 is fuller sounding - especially lower midrange but also more dynamic. Anyway. Use your ears to listen to music not as an analyzer. This is also my first review so hopefully I am able to properly articulate my thoughts for the V5i. Aug 13, 2014 · The only ones in the OPA that I liked was the ones I obtained free fron the BB site via there R&D program such as the OPA1612 . I can not tell the difference between macbook phone output and DAC+amp. 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. It could be very interesting to test their performance: - SNR - Bandwish - slew rate -. I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively outdated opamps. Jul 4, 2009 · By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. Regards, Thomas FX-Audio R07: OPA1612. May 28, 2020 · Purifi 1ET6525SA Power Specs: 230w into 8ohm 450w into 4ohm 510w into 2ohm Custom Input Buffer Board w/: - Neutrik XLR connectors - 5-way gold plated binding posts - OPA1612 OP Amp - TI TPS7A30/49 Voltage Regulators - Low, Med, High Gain settings - Clipping Indication (via Front Power LED) - The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. I's latest offering, the OPA1656. Nov 24, 2018 · right, it's about half the price of opa1612, maybe cheaper, after test those chips I didn't back to bargain, maybe possible to get 1/3-1/4 price. If you're comfortable desoldering soic8 opamps, you can consider swapping opamps but I wouldn't suggest it. May 15, 2022 · A forum thread where users discuss and compare different bipolar op-amps for audio applications. Feb 4, 2024 · 2. com. Dual customzied solution will give unmeasurable distortion (possibly -180db). Jul 4, 2009 · Source: Linux Mint + EasyEffects + PipeWire + 192khz Upsampling Interface: Black Lion Audio 2x2 Revolution Speakers: Presonus Eris E8 Headphones: DT880 250ohm Tweaks: Topping HS01, Ifi AC Purifier, Ifi Isilencer 3. Mar 14, 2010 · OPA1612 is fuller sounding - especially lower midrange but also more dynamic. Feb 28, 2020 · OK i've been testing the OPA2227, OPA2228, OPA2134, OPA1612, and the Muses 02. OPA 1642 and the OPA 827. Nov 21, 2022 · Oppo BDP-95 => RCF DX 2006 => QSC RMX850 (Bass Amp), Parasound A21 (Mid Amp), First Watt J2 (Horn Amp) Electronics mounted in Middle Atlantic BRK20 rack Feb 4, 2024 · This is a review and detailed measurements of the Purifi 1ET400A Class-D amplifier module. xDuoo is brand that gained worldwide reputation for their budget-priced music players and amps that offered premium specs, some of the most famous products from the brand include the: Dec 28, 2018 · Just now, I retested with new opa1612 and opa2211. It is hard to get it stable so 1 ohm output resistors are added in each output instead of what i liked 0. Mar 2, 2023 · [ May 1, 2025 ] Review: Bel Canto Design Black Combining TI’s low-noise OPA1612 with a passive RIAA network with 2% precision film capacitors and 0. In the data sheet of AK4499EXEQ(it is not freely download website), They are using two OPA1612 for I/V conversion each channel. People have a tendency to overestimate their hearing capabilities. Mar 1, 2016 · The OPA1622 is an excellent part, we use it in our headphone amp, but still has slightly higher noise and distortion over the opa1612. V6 vivid measured superb tho. The R07 headphone amplifier incorporates ultra-low-noise, ultra-low-distortion OPA1612 dual operational amplifiers. This AOP features independent circuits to limit crosstalk and avoid interactions between each channel. 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. OPA2209 does reproduce sub bass as deep or deeper than OPA1612 but the latter has a pretty significant presence in the sub bass region. The OPA1612A is considered a "drop-in" replacement for the OPA1612, with improved performance. SMSL DL100 Features Aug 26, 2023 · This is a review and detailed measurements of the 2023 edition of Sabaj A20d balanced DAC and headphone amplifier. 0, Ifi PowerX 5V, Thel Audio NT-25HQ, Tourmaline Chinch Caps, Supercapacitor USB Filter Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. Soundstage and placement felt more solid. Two cases were evalutated – in a Jul 4, 2009 · Yes, go for established classics opa1612, opa1642. 000015% at 1kHz. The distortion of the amp into 250mv 8 ohm load at 6500hz with opa1612 and opa2211 is 0. 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! Jun 5, 2024 · The FX-AUDIO DS07 is a desktop DAC without a headphone amplifier. You can argue that 2068 perform exactly the same as opa2156 but the difference between opa1612 and opa2156 is really big. The SMSL comes in a miniature Voltage noise is higher on 1656 at low frequency til 1khz. I'm with Jim here. Jul 5, 2006 · Thanks for the link. Of course. They aren't cheap with a main board, then daughter cards - about $200 for both. They have not disclosed the cost of the unit. Modules will be available to DIY Feb 6, 2025 · OPA1612 Op-Amp: Improves positional audio accuracy in games and provides low-distortion sound with rich detail for music. Disclaimer: This sample was provided by SMSL for an honest review. I'm waiting for OPA1656 and ADA4896 to try at I/V stage. As always, the article reflects my unbiased opinion. Transparency got way better. You can order the V7 op-amps from Burson Audio shop. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. You retrieve so much details and trebble extension but could be a bit fatiguing. Noise is roughly around 3-4nV. These newer opa (1622, 1612, 1656), in my opinion, lack something for longer listening. The Opa1612 is the audio version so they made the specs slightly worse. Feb 6, 2018 · I am also sending you an OPA1612 SOIC mounted to a PDIP adapter. It is on loan from a member and seems to be have been discontinued. Reply Delete Apr 15, 2024 · The review samples were kindly provided free of charge in exchange for an honest review. It doesn't show in the measurements, it's not there. I preferred the Sparkos for having the smoothest and most natural treble without loss of detail. Dec 6, 2018 · Just replace the original op-amp with one with a similar specification, if it's not possible to find an exact replacement. Jan 31, 2019 · It's a sad decision to use LM4562 here. It was sent to me by the company and costs US $420. 0 protocol 2280 up to 4TB x2 (SSD sold separately) Oct 2, 2021 · I also think that op-amp rolling is rather fun, even if the only op I found to be sounding clearly better than ne5532, was the lm4562 ( the others I tried: opa1642 opa2134 and opa1612 ) Last edited: Oct 2, 2021 Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. Jan 27, 2024 · OPA1656 instead of OPA1612 by thuanth » January 27th, 2024, 2:57 pm I'm thinking of building a couple of a24 boards and want to try T. Another variable might be the buffer gain which you can reset with jumpers. In this article, we review the FiiO’s Flagship All-in-One device, the K9 Pro ESS. Two cases were evalutated – in a Apr 17, 2021 · The top side 4pcs OPA1612 are I/V converter and those 4pcs Rubycon YXJ 220uF25V are coupling caps on signal. It ensures a very low noise density of 1. Dec 9, 2019 · 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 you and you have enough money to spend on this hobby. Regards, Thomas OPA1611, OPA1612 www. 2. That should get you going. I only covered the customs fees & taxes. Oct 30, 2024 · Op-amp Chip: OPA1612 Power Supply : Dual linear power supplies: high-quality, low-noise SSD : Support M. [responsivevoice_button] Disclaimer: Topping sent us the DX7 Pro via the Aoshida-HIFI Audio Store for the purpose of this review, in exchange for our honest opinion. *Distortion*: OPA1612A has lower THD+N (-130 dB) compared to OPA1612 (-120 dB). I really love LT1028! It's power-hungry, thou. Jul 4, 2021 · several users noticed my review before I was banned, and they were wondering why the review disappeared. 835uV OPA1633 0. Modules will be available to DIY Oct 19, 2023 · - the dual OpAmp OPA1612 does the buffering for both channels separately with a capacitor between output and Gnd to bring down the impedance for high frequencies (this is in principal risky (capacitive loading of the OpAmp), but when the cap is large enough, the cap will bring the loop-gain down far enough and the circuit will not oscillate. Reactions: Phorize , August and Evgeniy May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. fr - not including shipping If we only had 10 different op-amps to choose from and we use the same op-amp in the U8 & U9 positions. Purifi has taken the highly regarded 400A and refreshed it to bring even more state-of-the-art performance. 半导小芯为您提供 OPA1612 德州仪器-TI 的资料查询：德州仪器-TI数据手册查询，德州仪器-TI规格书查询，德州仪器-TI datasheet查询，德州仪器-TI IC查询、半导体查询、德州仪器-TI芯片查询、德州仪器-TI替代型号查询、德州仪器-TI产品、德州仪器-TI应用等相关信息，帮您快速找到OPA1612的数据手册、规格书 Oct 25, 2018 · I've designed a headphone amplifier using OPA1612 as a gain stage and using OPA1622 as output buffers. The Fosi Audio Box X5 phono preamplifier is a small, high-quality device that accepts MM and MC cells. I think FDA amplifier would be better for performance thus I plan to replace OPA163x(OPA1633 or OPA1637) Is it possible to replace OPA1612 to FDA(OPA163x) and is it worthy? Oct 15, 2014 · Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier achieves very low 1. . Feb 13, 2016 · This is a study of whether changing op-amps in a DAC makes a measurable difference. Op amps do differ in their distortion profiles. Presently they sell their buffers bare or with the choice of a couple of different op amps including the cheap, integrated LM4562. The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. It is a little bigger than a standard op-amp because of the adapter, so be careful when fitting it. 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). The clear winners for me are the 2227/8 but I think the 8 has a slight edge Apr 5, 2021 · The prototype here is made with an OPA1656 dual opamp and the initial impression is that I was on to something with this idea, because it does sound very good. I felt a great improvement overall. 4mm and a 6. Discretes are a bit heavy priced, i would add burson v6 duals to the roster, but do try first these cheaper ones. Company was kind enough to send me a complete, assembled kit consisting of two modules, power supply and case, ready to go. 1-nV/√Hz as well as an extremely low distortion level of 0. - have the specs changed since first release of this product ? If yes, specs and smsl website shoud have been updated ! May 23, 2018 · The first and obvious conclusion: we must avoid the audiophile Burson Audio V5. The xDuoo X20 features a ESS9018 K2M DAC, Bluetooth, a OPA1612 amplifier and native DSD256 support. OPA627 is really bass forward but you lose details, clarity and energy. Custom Input Buffer Board w/: Dec 28, 2018 · Questions is the opposite. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). I still can't believe the level of bias from tech review sites and YouTubers, all bought and paid for. ti. The LT1028 is by far better than the Opa1692. Opa 627 has something about it that makes you want to listen to it for hours. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. opa1611, opa1612 www. Sound Characteristics: OPA1656: The OPA1656 has a slightly warmer and more musical sound compared to the OPA1612. Prices The Eversolo DMP-A6 Gen 2 is set to launch shortly, priced at $869. - Choice is not permanent and can be changed by the customer via internal jumpers at anytime. 819uV Difference is 0. The volume control relay matrix, I am not sure how it works as hybrid but it reduce the numbers of relay and resister. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. No doubt Shanling has their hands Dec 28, 2018 · Would have been interesting to see how the TI Opa1612 would have performed as well in the custom buffer board. 2 NVME 3. Just set up your OPA1612 model having using the 5 pins in the order listed - as you would for the OPA1611 single op amp. Oct 19, 2023 · - the dual OpAmp OPA1612 does the buffering for both channels separately with a capacitor between output and Gnd to bring down the impedance for high frequencies (this is in principal risky (capacitive loading of the OpAmp), but when the cap is large enough, the cap will bring the loop-gain down far enough and the circuit will not oscillate. It's best use as an alternative to opa1612 when noise is not a big concern. *Slew Rate*: OPA1612A is slightly faster (25 V/μs) than OPA1612 (20 V/μs). docx Date : 17-aug-2024 Page : 3 of 4 page(s) Feb 24, 2024 · The TI OPA1612 is what is used in the Cosmos E1DA. The front panel has a volume knob with a very smooth and linear rotation feel, underneath the volume knob is an XLR output, 4. Disclaimer: FiiO sent us the K9 Pro ESS for this review, free of charge. Old op-amps such as the LF412 and TL072 are more than good enough for 99% of audio applications. Apr 17, 2021 · The top side 4pcs OPA1612 are I/V converter and those 4pcs Rubycon YXJ 220uF25V are coupling caps on signal. If Topping wants to cut cost, just remove display or use plastic case. OPA1611, OPA1612 www. Purifi 1ET6525SA Power Specs: 230w into 8ohm 450w into Jul 3, 2019 · It gets complicated If you find a review, it could be for an OP275 buffer (they changed the build spec to LM4562 just 2 days ago). : JH Doc. And we run at +-15V, so one really shouldn't put higher voltage in there. Mar 18, 2024 · Lynn reviews the FiiO K9 AKM, which is a new flagship desktop AK4191EQ+AK4499EX USB-DAC and balanced THX headphone amplifier. Just feel the better spec’d amp is better for the circuit (performance/health wise). 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. Amir's testing environment is known to be not so clean. There were all good things said about it everywhere, and no negative thing was said about it. Opa1656 has good phase response at high frequency. 00026%(they are pretty much the same chip) but when I measured with opa2156 I get 0. The sub bass regions are more well pronounced with OPA1612. Several reference are used on forum. 3. 5). I hate such ugly clipping behavior(any real opamp of serious manufacturers have an ideal clipping without screeching) and one that fact is enough to me to consider that chip junk. Buck cap change to 1500uF/80V/Nichicon due to 1800uF/63V/Rubycon not able to purchase. It is less fatiguing than the MUSES01 however, seating the listener further back from the stage. I don't care about listening tests or something else, just want to use the technical better one in my amp. Disclaimer: The FiiO K9 was provided by FiiO for this review, at no cost. FiiO Therefore, the OPA1612 simulation model really only contains one op amp having the pin order of the single OPA1611 op amp. I was not expecting much from the OPA1612 as the gain specifications are not compatible but from fitting it produced a listenable sound. I have them measured ln violectric v200 and gain stage of o2. 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. Apr 26, 2022 · Aroma A100tb was the one that was easily available, and the price tag was quite good. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a DIP8 socket. Most DACs after 2019 are using opa1612 or opa1622. Jun 7, 2016 · Before writing this review I would like to say many thanks to Mr Charles from Burson Audio for sending me the hybrid op amps for review purposes. I suggest the following reference - 994Enh Discret Mar 5, 2020 · Tried putting in opa1612 today. Feb 13, 2016 · This is a detailed review and measurements of SMSL M8 DAC. ESD is built in opa1612. I also really liked the OPA627 that I had in an audio-gd dac years ago. See if you notice something, if you end up liking 1612, go for bjt discrete, if you like 1642 and opa1656 go for jfet (burson v6). The OPA 1612 and the 1642 is to my ears better than the 2134. OPA1612 0. TI has small text fixtures, AMP-PDK-EVM to hold some of the surface mount packages for testing. 35mm jack connector for most headphones and IEMs, it also came with a 6. Benefit is lower dc offset and less distortion also high open loop gain also superior stability. 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. 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. Although, I have to think that all of our hard work achieving ultra low noise in phono preamps goes out the window as soon as the needle touches the vinyl, and circuit noise is swamped by mechanical noise in the system. as these can be unstable and go into oscillation. Feb 28, 2018 · If I'm seeing this right, looks like the OPA1612 op-amps I was talking about earlier are the input buffers for the 4-pin XLR plugs. The higher current capability of the 1622 is of no benefit in this circumstance where the load from the amp module is 4. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. CMRR is not a big issue. Go for the opa1612 given the choice. I was looking on the TI website at that. Apr 6, 2020 · 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. 1% thin-film Jan 12, 2025 · The OPA1612 is a great part for source impedances up to about 2. atm audio's interest, in the first place, is selling its I/O buffer which allows the permits the user their choice of op amps. Amidst all this, I came across the review of A100TB by @Tokpakorlo. I swapped these for several different op amps including OPA1612, Burson V6 Vivid, and OPA627. The DL100 features quad CS43131 DAC chips and a fully balanced architecture. Jan 15, 2022 · I bought the VTV buffers with Sparkos SS3602 op amps. Here are the measurements of the dual mono and with different op amps (Sonic Imagery 994, OPA1656, LM4562). Oct 25, 2018 · Neurochrome hp-1 is essentially the same but using opa1612 and paralleled the whole composite amplifier section. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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 too). Or some other op amp, because their IC socket supports op amp rolling and you can order it with a different op amp if you prefer. Jul 4, 2009 · I prefer the opa2211 over the opa1612 (same chip but with less better specs). : ADC driver simulations_240817. compared to modern opamps. 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. This gave me a chance to May 18, 2023 · NFJさんのOPA1612がバージョンアップしてサーマルパット付になったので購入してみました。OPA1612はそこそこ熱くなるのでサーマルパット付が欲しいなと思っていたのです。Kitと言ってもハンダ付け8箇所するだけなので簡単です。 Jul 4, 2009 · OPA1612 is relatively new opamp and is widely used in several medium-priced but also high-priced DACs. Since 2007 they have been Feb 6, 2018 · I strongly recomend to change LME49720 to OPA1612, I listen my D10S with this OPAMP (Also have LME49860), OPA1612 have better bass (mutch deeper) and softler treable with same detal level. rrbf crvby cuac bixbky lbdnqqu jguzl ntqjc nqrnzsa lfxk aewob