Opa1622 review.

• Opa1622 review The N6ii is very much a long-game digital media player. Placing a series resistor in the loop as shown above only increases the total equivalent output impedance of the amplifier which will make it worse at driving a capacitive load. Mar 4, 2012 · 備忘録的にオペアンプの音質比較を載せておきます。('12 3/14補記)電圧は±15vで駆動。(電圧で音質が変わる石がある。特にOPA系)僕は40kHz位まで… Dec 7, 2019 · Now the PAW 6000 OPA1622 amp stage is drawn from the PAW Touch but in the Touch, this was a dedicated balanced amp circuit with an LME49600 being used for the 3. Apr 14, 2023 · Next was the opa1622 (the most technical and flat sounding) which has a very balanced sound with tight drums, and a very clean overall sound and dark background. common mode voltage that I've measured on any op amp. Dec 28, 2018 · Not really. I got the little though because I never liked battery powered amps unless the batteries last ultra long like the fiio e7 Ti製のSoundPlus高性能オーディオ・オペアンプ「OPA1622」のGNDをどこに接続するか問題について。 OPA1622とは; OPA1622のGND処理と音質比較. 1v 输出。 我希望 opa1622能够提供的电流大于单个 opa1622、因此我插入了一个 lme49600。 我面临一个仿真问题。 如果 vcc / vee 更改为17v 或更大、则电路运行方式与设计一样。 Jun 12, 2022 · Topping D10s uses the ES9038Q2M DAC which has 7 presets available. Oct 27, 2020 · The manufacturer’s choice of the LME49720 op-amp is the standard solution for many devices in this class today. Jul 21, 2018 · To put the rise in perspective I overlayed the Phon curves. For example, try OPA1622 or LM6172, you may well like them a lot more. 価格的に期待していなかったが、解像度も高く音も明瞭で高音の抜けも気持ちよい。muses02より低音は弱めだが高音が素晴らしい。 ギターやバイオリン等の弦楽器との相性が良い感じ。 音も柔らかみがあり疲れない。 OPA1622 quiescent current is about 2 times 3 mA x 30 V (2 x 15 V) = 180 mW A 32 ohm HP , maybe around 20 mA rms 1V rms out , is estimated at least another 500mW (both L & R ) , that's 680 mW for a 3 x 3 mm chip , even with the thermal pad only soldered to some copper print surface. Dec 20, 2022 · This is a review and detailed measurements of the JDS Labs Atom DAC+ desktop USB DAC. But I still needed to design my own ones. Aug 20, 2024 · Part Number: OPA1622. The device features a low noise density of 2. 5 mA per channel. The next section will focus on choosing the right audio amplifiers based on the application and end equipment. This OPA627 was made by Burr-brown long before the Texas Instrument acquisition. There are too many different applications and results from one scheme are not simply transferable to another ones - like different gain, filters, I/V, high/low CMV etc. SMSL plunged high and established … Oct 7, 2023 · Initially, the 5K used an AK4377a and TI OPA1622 combo which was quickly discontinued, probably due to the Asahi-Kasei (AKM) factory fire. ChitChat: 我修改了设计以匹配 dac；互阻抗级摆幅为±9. Sep 26, 2023 · OPA1622: LPF Circuit Review. e. 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. Jul 4, 2009 · The opa1622 is very powerful and some are generally attracted to it because of its outstanding benchmark spec sheet scores. On the EVM, each channel of the OPA1622 is configured as a difference amplifier that receives a differential input signal from an audio analyzer or audio DAC and outputs a single-ended signal. The stability is hard to achieve on my end because the pole zero compensation technique utilized. May 10, 2019 · [Review] TOPPING NX3s chip OPA2140 + LME49720 portable amplifier hifi headphone amplifier - เว็บบอร์ดหูฟังมั่นคง munkonggadget Nov 16, 2019 · I will cover the sound in-depth, but even specs look good: CS43131 as a DAC, OPA1622 as an AMP, high resolution support, good output power — what else is needed? Of course, good price, and it is rather good here — you can buy Meizu HiFi Audio Pro for 50 USD and it is one of the best ways to jump onto audiophile train. Specifications are Dec 26, 2017 · The OPA1622 was designed to power headphones and is almost certainly not in the Limetree Network's preamp out circuit. I'll look for the OPA1622's as well. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. 6 mA of supply current per channel. This will keep the subwoofer tight and accurate, allowing the Electra 906s to focus on midrange and high frequencies without being overwhelmed by sloppy or distorted bass. Evan Cornell Expert 1410 points Part Number: OPA1622 Other Parts Discussed in Thread: TINA-TI, OPA145. The only opamps I had at hand that could deliver ±70 mA per channel was the OPA1622 which can provide even more. One could have 130dB peaks and still be below the hearing threshold for the amplifier noise. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. Feb 17, 2017 · The evolution of the original irreverent and irrelevant and non-authoritative site for headphone measurements, i. May 11, 2022 · Dual Headphone Jacks . The SS3602 have an impressive tonal accuracy and clarity. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. The Limetree Network Player's specifications for its headphone output provides none of the information you need to tell for sure. Chờ review xem thế nào Jul 27, 2021 · @cqtek it will be nice if You compare Z4 to some HiBy R5 on review. I have come up with the following design. Mar 25, 2017 · I just had a review with the new Burson V7, so I made a comparison too ofcourse. Dec 13, 2020 · The HP-22 mounts as a shield atop a Texas Instruments OPA1622 evaluation module (EVM) to form a complete high-performance headphone amp. The device features a high output drive of +145mA/ 130mA for direct drive headphone. I've installed the OPA1688 and OPA1622 pspice models from the TI website into LTspice. 4mm balanced headphone jacks, directly driven by OPA1612 and OPA1622 op-amps, respectively, reduce noise and distortion by 60 % and 50 % for crisp sound. Two opa2604 coming in (probably fake) to compare it with. 7db。 究其原因，主要有三点。 The 9038D combines ESS’ mobile flagship DAC ES9038Q2M with OPA1622-1602s, Susumu resistors, Murata C0G capacitors, AVX tantalum capacitors, and Taiwanese connectors. May 23, 2018 · Side note: opa1622, my experiences with opa1622 wasn't all happy. Articles. Jul 4, 2009 · You should probably use something to match the original opamp, regarding the no. 5mm output. Dec 14, 2010 · A mint-tin CMOY headphone amp like no other! Uses the brand new Texas Instruments OPA1688 and (optionally) OPA1622 headphone driver chips. 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. 8 nV/√ Hz noise density with an ultra-low THD+N of -119. 2 Performance Specification Summary A summary of the OPA1622EVM performance specifications is provided in Table 1. Oct 25, 2018 · The output buffers on the O2 amplifier are reasonably grunty opamps. LM27762 provides low noise of positive and negative power supply for OPA1622, which makes Meizu Hifi pro deliver bigger power and better control and dynamic with an excellent experience. It is made by Texas Instrument and it is the latest op-amps that built and designed by more modern technology. manufacturer's dedicated High Fidelity AOP. The product was just announced at a retail cost of US $109. Jan 11, 2020 · Here is a project I completed several months ago that really worked out well. Oct 14, 2024 · OPA1622 for Subwoofer Channels: While the subwoofer channels are feeding the active SVS SB-12NSD subwoofer, the OPA1622 ensures that the bass signal remains clean and controlled. Lot's of good feedback. 8nV/Hz and a low THD+N of -119. Each channel has 4 outputs summoned, thus lowering the already really low noise by around -6 dB. I also have some evaluation boards from them, namely LME49720 and OPA1622 EVM. 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。 Jul 27, 2021 · Runs best with OPA1622 (need mods to fit) because it's really stable opamp or classic lme49720 who is easy for application. 2dB at 1kHz. I would love any feedback! Jun 17, 2020 · OPA1622 is a dual channel, bipolar input, SoundPlus audio operational amplifier. 6mA/ch and can deliver 150 mW into 32 ohm headphones at extremely low distortion which makes it well suited for a lot of applications. The device has a low noise density of 2. edit The problem was mostly in connector and cable. 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. YMMV --- Aug 7, 2019 · The OPA1622's high AC Power Supply Rejection Ratio (PSRR) and Common Mode Rejection Ratio (CMRR) specifications eliminate noise from the power supply, ideal for portable audio applications. The main reason why I’m reviewing the 9038D is that it offers a great price-performance ratio. The OPA1622 is a dual, bipolar input, SoundPlus audio operational amplifier. In actuality, if you compare the OPA1622 datasheet Figures 38 and 39 Output Voltage vs Output Current graph,to the OPA1688 Figure 9. 5mm single-ended and 4. Thanks in Dec 13, 2020 · The HP-22 mounts as a shield atop a Texas Instruments OPA1622 evaluation module (EVM) to form a complete high-performance headphone amp. opa1622内部原理图（一个通道） 首先，opa1622可以确保音质更好，失真少。负载为32欧输出功率为10mw时，总谐波失真thd值是-135db。输出最大功率为150mw时，总谐波失真+噪声(thd+n)值是-118. I use TPS7A4700 and TPS7A33 low noise DC to DC converters with 4 µV/16 µV noise. May 28, 2017 · The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2. Jun 23, 2019 · Before starting my actual review, I just want to remind you that headphone listening at the Hi-Fi level is a big part of my life. The OPA1688 operates with lower supply current than the OPA1622, and does not have as high of output current capability as the OPA1622 either. 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. The amp provides 200 mW into 300 Ω, 360 mW into 50 Ω, and 200 mW into 32 Ω at -130 dB (0. Opa1622 is supposedly a better choice. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. Once broken in a few days, the V5i-D's are felt to deliver stellar performance. The contender is the vintage OPA627 which is far older than the OPA1622. No thermal problems on 32Ohms earphones. Très bon Très bon aop, avec le son muse; j'aime beaucoup Feb 22, 2016 · opa1622主要特点和优势. ) X3 Mark III Review Jan 19, 2011 · I still remember reading that review a long time ago. It could be very interesting to test their performance: - SNR - Bandwish - slew rate -. Several reference are used on forum. I'm totally agree with You. Mar 9, 2020 · OPA1622 EVM is $30 exclude shipping, also it requires 2 DC adapter. Also, there's a good Burson review thread at Head-Fi. Dec 17, 2019 · does meizu hifi pro have a power saving mode ( activated by default) not powering the ti opa1622 amp to save battery life and only relying on the CS43131 dac output of 2x30mW ? i notice that to get similar normal sound level on my 43 ohms iem in am at 90% in my internal phone dac (sony xz premium) and 75% on the meizu pro. One may be surprised easily. The Muses 8920 was a little mashed in regards to over instrument separation and not as clean as the others including the 8820 which is far cleaner and with a good soundstage. This is significantly higher than the TPS61322. frequency response graphs, CSD waterfall plots, subjective gear reviews. I use the OPA1622 in another tube preamp FX audio Tube 03. To work best with heavy loads need to be set up in parallel. Aug 16, 2021 · First professional review I will add link to first post as reference. As of right now, the A01 motherboard taps into Cayin’s house sound or preference for something slightly richer, sweeter and an all-round performance that will appeal to a very wide audience indeed. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. 5W into 32Ω so Lotoo is basically splitting the OPA1622 between the balanced and unbalanced on the PAW 6000. This device also has a high output-drive capability of +145 mA per –130 mA. It made me go out and buy some hd580s and a headroom amp LOL. It's just extra $10 for 3 opa1612. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. Mar 17, 2019 · The OPA1641 would be slightly better. Oct 15, 2019 · Meizu HiFi decoding PRO amp on the basis of the built-in decoder, increased OPA1622 amplifying circuit, the audio signal of CS43131 output is amplified again. Dec 17, 2019 · I found that Ugreen has made a limited release of this cs43131+opa1622 setup after its discontinuation by Meizu so I snatched one albeit at premium for backup Main: Computer -> REGA DAC -> SKW single crystal copper RCA -> JDS Labs Atom AMP+ Mar 16, 2016 · Texas Instruments' OPA1622, dual, bipolar-input, SoundPlus audio operational amplifier achieves a very low 2. FiiO M9, an advanced Android-based, portable music player/DAP/DAC with an endless amount of premium specs and a Hi-Res Audio certification. The multi-tone IMD residual measures below -146 dBr (referenced to 100 mW into 300 Ω). 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). OP-Amp *2 as stated by Fosi I replaced with several until I settled on the OPA1656, I tried combinations with OP-Amp *3 with various combinations to see what sounded the least shouty and most detailed while not sounding too Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Too objective for subjectivists; too subjective for objectivsts. Aug 11, 2023 · The first candidate is the OPA1622. However, I found D10b sounds terrible with LM4562. Mar 4, 2012 · 備忘録的にオペアンプの音質比較を載せておきます。('12 3/14補記)電圧は±15vで駆動。(電圧で音質が変わる石がある。特にOPA系)僕は40kHz位まで… 能。opa1622 具有关断模式，允许放大器从正常运行 状态切换至一个待机电流典型值低于5µa 的状态。此 关断特性专门用于消除进入或退出关断模式时的喀哒和 噼啪噪声。 opa1622 内部采用独特布局，即使在过驱或过载条 件下也可在通道间实现最低串扰和零交互。 Dec 7, 2019 · Now the PAW 6000 OPA1622 amp stage is drawn from the PAW Touch but in the Touch, this was a dedicated balanced amp circuit with an LME49600 being used for the 3. Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. As detailed as the opa627 but better balanced. 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. In the meanwhile, enjoy some sweet, sweet info: The Cayin N5 2nd Gen MSRP: $369. 5V. Feb 8, 2020 · The OPA1622 is a dual, bipolar input, SoundPlus audio operational amplifier. Jul 27, 2021 · Specification and pictures here - Head-Fi product page Reviews: Syncaine professional review - article in Russian (text, pictures and video - you can translate using Google for example) Countryboyhk impressions - post in Head-Fi forum with photos Fe Lix Ramearez impressions - screenshot from Dec 16, 2015 · Texas Instruments hat einen neuen Audio-Opamp vorgestellt, der laut Hersteller die neue Messlatte in Punkto Audioqualität darstellt. How about 2 opa1622? Mar 7, 2025 · Les performances de l'OPA1622 sont légèrement inférieures à celles de l'OPA1612 mais dans des proportions qui ne sont à mon avis pas audibles. These three Op-Amps sounds great. P/s: E1DA lộ hàng chút là đổi sang OPA1622 trên con D cũng khiến âm thanh bớt lạnh hơn, nên con D này sẽ có chất âm khác chút so với S. I will send You my modded DSDs for play, but it's very expensive shipping via couriers from Poland. They even have a ground connection for god's sake! Feb 19, 2019 · RCA/XLR op-amp replaced with OPA1622 which I had lying around, it also seems to improve transients and attack slightly. 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. However, we recommend that you immediately replace it with something else. Has anybody found a way/hack to select another preset than the default apodizing fast roll-off filter? Theoretically it should be doable - just requires the skills, time, and effort. Der OPA1622 ist das neuste Mitglied der Familie erfolgreicher Audio-ICs von Burr-Brown, die seit 2000 von TI weiterentwickelt wird. Aug 17, 2009 · New items New comments Author list Series list Latest content Latest updates Latest reviews. If Topping wants to cut cost, just remove display or use plastic case. Very modern sounding Mar 31, 2020 · Theo tôi xài thì con OPA1622 tránh được tiếng pop vậy hữu dụng hơn, rủng rỉnh chút chắc cũng làm 1 con kéo IEM cho tiện. Nov 28, 2022 · I bought a TempoTec Sonata HD PRO like a year ago because it got recommended a lot to me as the best performance per dollar USB DAC/AMP dongle. Dec 10, 2015 · The OPA1622 comes in a 3mm x 3mm package, consumes 2. There is a stamp on the box that denotes what chipset is inside. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. tnt-audio. 65” 845×480 TFT touch screen DAC: ESS9018K2M Op-Amp Jul 27, 2021 · @cqtek it will be nice if You compare Z4 to some HiBy R5 on review. I think I found sweet spot of buttons in my Z4: - remove foam from all buttons - leave lower screws half loose It's work perfect. A more refined sound all round than the 2604/4562 combo. So you'd be "degrading" the performance by going that route (even though both are excellent). OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. I ususally replace resistors with extra set of caps (actually, I replace resistors and stock caps using 0805 0. It has the most stable input capacitance vs. 1 and 22uF caps) and then provide connection to ground via extra wire, if using OPA1622 as a permanent solution. Two 4556 can already give 200ma of output current. Par contre, l'OPA1622 a une capacité de sortie en courant bien supérieure à celle de l'OPA1612. I accepted the sample in the interest of getting this information to you early 能。opa1622 具有关断模式，允许放大器从正常运行 状态切换至一个待机电流典型值低于5µa 的状态。此 关断特性专门用于消除进入或退出关断模式时的喀哒和 噼啪噪声。 opa1622 内部采用独特布局，即使在过驱或过载条 件下也可在通道间实现最低串扰和零交互。 Aug 26, 2018 · The OPA1622 dual op-amp mounted on a DIP 8 adapter features a very tiny chip, which is amazingly small so it did not inspire much confidence in the notion of the op-amp providing a high-currant capacity for a headphone amplifier application, or for the analog outputs of a DAC for that matter. Dec 9, 2022 · The OPA1622 is fantastic for audio applications however is much higher in supply current and won't satisfy the minimum voltage supply of 1. It's a killer OpAmp, and better suited to 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. The higher current capability of the 1622 is of no benefit in this circumstance where the load from the amp module is 4. 5倍的增益、可提供单端 ±9. 5mm Balanced Output. DS400 is equipped with both 3. It was sent to me by the company and is an early production sample. Date : 2024-11-05. Feb 24, 2024 · Yeah, I know. May 2, 2023 · OPA1622 has a very low output impedance which makes it very good at driving capacitive loads. In the first schematic, transient plot and AC plot below an OPA1688 is used for both the amp chip and the virtual ground. 8nV/√Hz and a low THD+N of –119. 1v、而 opa1622具有0. Even when 0dB (which is -20dB) would be 110 Phon you would still hear total silence. In AndyEF's old reviews database it seems the ALC5686 VE Avani was listed in the same ratings bracket as the CX31993 JCally JM6, but this doesn't necessarily clarify a lot without access to the review text, as Andy is a big fan of lower-fidelity warmer sound. Feb 6, 2018 · OPA1622. But if its raw output power that you want and don't care about solution size or power consumption then a composite amplifier with the LME49600 or BUF634 might -TI OPA1622 AOP STEREO DIP8 support- This Texas Instrument PDO prefigures the latest generation of the U. With a high performance noise rejection and feed noise filtration rate, this PDO has outstanding dynamics and a total harmonic distortion of -119dB theoretical for a current of 145mA. com with a TI insider involved. Mar 5, 2018 · Hello everybody, I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. I deliberately avoid measuring until I have finalised my subjective impressions to avoid objective behaviour influencing my opinion. When comparing A01 and T01, playing the same test track, at the same volume level, and using the same pair of monitors, I hear T01 to have a slightly wider soundstage expansion, perhaps due to a dual DAC design Brand Name: Huo Guang Shu Certification: NONE Origin: Mainland China State of Assembly: Ready-to-Go Compatibility: All Compatible Bundle: 1 Camera Equipped: No Model Number: OPA1622 OPA1622 is a dual-channel, bipolar input, SoundPlus™ audio operational amplifier. I really appreciate the 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 Jan 27, 2024 · The OPA1612 has lower noise and distortion than OPA1656. Todays opa combo gave tighter bass, clearer vocals, more organic, better instrument separation across the board and more air in the highs. Aug 23, 2019 · If I may start this review with one of the final statements I made with the original N6ii review,. Mar 16, 2020 · Here is a project I completed several months ago that really worked out well. Really unfortunate they all went discontinued too soon. Dec 10, 2015 · I tried to put OPA1622 to the output buffer of FiiO X3II player in place of LMH6643. Once again I must said it's wort a price as most Zishans and very easy for modification. Unfortunately, the OPA1622 in a 5x5mm square package and is highly specialized. Sep 21, 2019 · I'm not a bass heavy listener, so an op-amp that provides "detail and spacing" has my attention. I purchased my first headphone amplifier back in 2006 when just mentioning “a headphone amplifier” in the audiophile circles would rise both eyebrows and suspicion of sanity, today having one is a must have if you care about headphones in general. The only part added after was the bit about SNR. Aug 10, 2021 · Main problem with based on opa1622 circuits is design for low impedance usage. 8-nV/√ Hz noise density with an ultralow THD+N of –119. We have made careful design on the ground wire shielding, component layout and power supply decoupling, and the background noise in the actual test is very low. The OPA 1622 is the newest member of the popular Burr Brown audio family, which TI took over in 2000. It was very hard to solder VSON to the SO-8 place. The FiiO M9 is the newest DAC/DAP from the brand which is also placed as the flagship model on the M line. 能。opa1622 具有关断模式，允许放大器从正常运行 状态切换至一个待机电流典型值低于5µa 的状态。此 关断特性专门用于消除进入或退出关断模式时的喀哒和 噼啪噪声。 opa1622 内部采用独特布局，即使在过驱或过载条 件下也可在通道间实现最低串扰和零交互。 Jan 5, 2019 · Xuelin H8 Tuner OPA1622 Balanced Module for 2. Compare the datasheets. 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. It can also drive a 32Ω load with 100mW of output power. Apr 8, 2018 · Both DACs have basically the same style output stage with 3 op amps, the OPA1622 is more powerful than OPA1612 which makes it more suitable to drive headphones directly but unless you are using highly sensitive IEMs you will still need a headphone amp, the OPA1612 and OPA1622 will be very similar when buffered by an external amp. 。 Nov 26, 2023 · This is a review and detailed measurements of the Aiyima A07 Max stereo class D amplifier. Impressions and reviews ought to be found here as well when it hits the market. A lot of ppl just wondering about goes for something expensive or just cheap Chinese DAP. This is at 20KHz with a 600R load. Sep 6, 2017 · It uses the ES9038PRO chip in combination with the OPA1622 output stage chip. The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2. 2 dB at 1 kHz, while driving a 32 Ω load at 100 mW output power. Nov 26, 2023 · This is a review and detailed measurements of the Aiyima A07 Max stereo class D amplifier. Jul 4, 2009 · Ebay board houses 2 power bypass caps (not sure if John's had those), which helps. オペアンプの違いによる音質比較表を、店主の主観たっぷりに紹介しているので、オペアンプ交換の参考にして欲しい。 OPA1622的数据表显示了一个使用 DAC 的差分输出驱动该 OPA1622的示例电路。 我们计划使用 PCM5102的输出驱动 OPA1622的输入。 由于 PCM 5102的输出是单端的、您是否要回答一个将 PCM5102的输出连接到 OPA1622的输入的示例电路？ 谢谢、此致、 Jeffrey Bruton Mar 7, 2019 · Sometime I use OPA1612, OPA1642 and OPA1622. 5mm Balanced Output Description. Sims great. I don't care about listening tests or something else, just want to use the technical better one in my amp. The sound became excellent - clarity and powerfull. Search Head Gear. Description. as i believe my phone May 6, 2021 · Not really surprising since the Ugreen has the same architecture of Meizu Pro with OPA1622 after CS43141 to give some more current in low ohm load. 99 Product Highlight MCU: Rockchip RK3188 Display: 3. 00003% THD). Slightly worse than the OPA1602. Amazing amplifier, no problem with unity gain stability. Got it at $40 and it works perfectly, I get both plenty of volume and quietness when I want either in my Shure SRH-440s, my HD560s and my Blessings 2s The OPA1622EVM is a hardware platform for evaluating the performance of the OPA1622 audio operational amplifier (op amp). In datasheet it is even 600 Ohm but it's a number. S. For a full list of electrical characteristics of the OPA1622, please refer to the OPA1622 product datasheet (SBOS727). 比較結果; GNDはどこに接続するべきか？ 一番良い方法は何？ まとめ; おまけ; OPA1622とは Jul 4, 2009 · It is now living in a Ayima a3 together with a opa627 (simply because I already had those). 2dB at 1kHz, while also driving a 32Ω load at 100mW output power. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior Feb 23, 2019 · There are many reviews of audio hardware and expert members to help answer your questions. A friend over in France had this design in his head and shared over at DIY Audio, TI was coming out with specific op amps designed for Headphone amplifiers! So with this really niche market I was very curious to how these new headphone targeted op amps would work in a headphone amplifier… Usually with these new IC Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Uses either throw-away 9V batteries or lithium rechargeable batteries. Hello, I would like to use OPA1622 Mar 9, 2023 · SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. Two cases were evalutated – in a Aug 11, 2019 · Since both have the same four OPA1622 op-amps at the output stage, any difference in tonality should be due to DAC sound signature. May 12, 2019 · Hard to say, you'd just have to read all the reviews you can find on both. Ultra low distortion with extremely low idle current for long battery life. 110 Phon is very loud. V5i-D Review Thread Xuelin H8 Tuner OPA1622 Balanced Module for 2. Jan 7, 2021 · I rolled the T6 Pro with the Oracle 02 op amps in the preamp output stage and the opa1622 in the A07. OPA1622 ideal for use in portable-audio applications. Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE!. Xuelin tuner balanced module uses 2 OPA1622 to form BTL output. The device hasRead More Jan 17, 2024 · Next was the opa1622 (the most technical and flat sounding) which has a very balanced sound with tight drums, and a very clean overall sound and dark background. 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). The OPA1622 performance was comparable to the LM4562 with a 10k source impedance, G=+1 and 5Vrms input signal. So maybe they shouldn't be used on a dip8 converter. 参考価格:700円. This opamp is a newer generation chip with greatly improved performance. A friend over in France had this design in his head and shared over at DIY Audio, TI was coming out with specific op amps designed for Headphone amplifiers! So with this really niche market I was very curious to how these new headphone targeted op amps would work in a headphone amplifier… Usually with these new IC Apr 8, 2018 · Both DACs have basically the same style output stage with 3 op amps, the OPA1622 is more powerful than OPA1612 which makes it more suitable to drive headphones directly but unless you are using highly sensitive IEMs you will still need a headphone amp, the OPA1612 and OPA1622 will be very similar when buffered by an external amp. High end amp won't be 100x better without a very good source. Oct 26, 2021 · NOTE: Subjective impressions and review are written BEFORE measuring the device. They sound similar to the Burson V5i op-amp, with a bit less fullness, but not lean sounding in any manner. of inputs & outputs. The OPA1622 has an Iq of 2. Itself is more stable than without the compensation but it is much more limited for further improvement with supporting circuit. YMMV --- SoC: JZ4760B, DAC: PCM5242 *2, LPF: OPA2140, OP: OPA1622: Firmware Upgrade: by micro SD card (*The product uses GPLv2 compliant firmware. Loving the opa1622 in the Aiyima A04, a little off topic but worth a Aug 18, 2024 · Part Number: LME49600 Other Parts Discussed in Thread: OPA1622, , TINA-TI, BUF634, BUF634A, OPA1633 Tool/software: Hi, I am designing a headphone amplifier for use in recording studio applications. The Touch output was 0. I would like more output power than a single OPA1622 can provide (300mA current would be ideal, even at hot temperatures). The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2. Oct 30, 2019 · I've been pleased enough with Texas Instruments SoundPlus OPA1622 and OPA1611 op-amps mounted on DIP8 sockets to replace NE5533 and NE5534 op-amps, I've not been that interested in trying anything else. I guess that a dual opamp might measure and sound pretty much more identical on both channels (both channels are on the same silicon die), while two different opamps (especially if they're from different lots) might measure a little bit different (of course, the worst case scenario would be Aug 7, 2019 · The OPA1622's high AC Power Supply Rejection Ratio (PSRR) and Common Mode Rejection Ratio (CMRR) specifications eliminate noise from the power supply, ideal for portable audio applications. But I experience some stability issue and over heating. One good example is XU09 portable headphone amplifier. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. I can not tell the difference between macbook phone output and DAC+amp. Jan 31, 2019 · It's a sad decision to use LM4562 here. 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. On the other hand, the inverting configurations have comparably low input impedance, reduces loop gain, increases noise gain, and increases the loading on the output stage. I suggest the following reference - 994Enh Discret 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 The OPA1622 is a high-performance, bipolar-input SoundPlus™ audio operational amplifier. Dieses IC ist Nachfolger des bekannten und hochgelobten OPA612. For example, no headphone output impedance is quoted that I could find. It ensures a very low noise density as well as an extremely low distortion level. 2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. Mar 4, 2022 · 您好，理论上使用opa1622 是不应该听到噪声的，因为opa1622 是一款专门的音频运放，通过数据手册就能看到它的很多电气特性是专门适用于音频应用的，比如低噪声，极低的thd+n，高的ac psrr以及cmrr规格，都决定了它在音频运用上的最佳性能。 • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. The 1688 is very similar sounding I've heard but it's got the added advantage of being in soic package! 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. 4k. This is super cheap and probably most compact hybrid portable AMP. Dec 17, 2015 · Texas Instruments has launched a new audio opamp claimed to be the new standard for high-end audio. Jan 17, 2021 · My Video Review: With the introduction of SP200, SMSL embraced the THX-AAA hype train that everybody was talking around the block. By the way, we still don't know OP's source. Swapping to other opamps may improve performance but not likely to increase output power. Finally, there was a serious contender in town for the overrated Drop THX-789 and as my comprehensive comparison of the THX-es proved, in some ways it even outclassed it. Most DACs after 2019 are using opa1612 or opa1622. com Oct 25, 2018 · I've designed a headphone amplifier using OPA1612 as a gain stage and using OPA1622 as output buffers. It was sent to me by the company and sells for (I think) $85 with the included power supply: I like the little design touches and the much heavier enclosure (made out of steel?). This op-amp is quite popular right now. Oct 14, 2017 · This is also the best place for your general conversations about the N5ii. Sep 21, 2015 · OPA1688 sims great as VG, OPA1622 not so much Well here is something interesting. If you’ve been following my reviews, you know how much I value that. Single 1622 isn't capable to drive it in proper way. Nice pictures and a lot of good words about Z4. It is the successor to the well-known and renowned OPA 1612. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. The Sparkos SS3602 discrete op-amps are more close than they are different from the Burson V7, quality wise, there are both extreme performers! But signature wise they are different. But that does not say anything about the SQ. Aug 16, 2022 · 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. Elom G. Tool/software: Hi, I am making a studio headphone amplifier product based on the AK4499EX DAC (as discussed in a linked post). 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 really appreciate the tiのオーディオ用オペアンプ「opa1622」を購入しました。 特徴は、ハイレゾ音源対応のdac、ヘッドフォンアンプなどに 適しているそうです。 「業界最高性能」で低歪みと低ノイズをうたっているそうで、 そう言われたら 使用してみたいオペアンプです。 Oct 11, 2020 · 我们在使用OPA1622运放过程中，使用芯片的EN脚拉低关闭运放后，运放输出应该disable，但是现在运放输出声音只是变小，无法彻底关断。更换过OPA1622都是一样的现象，经测量确定EN脚已经拉至GND。 This review has been posted for NJR MUSES8820 Dual OPA DIP8 (Unit) Note : 5 / 5. It can drive both line level loads and headphones with extremely low distortion, and we found it to be a very good match for ES9038PRO. cqvjyix xabd ojic yhontur kmocx mrzwwt hiir cxdzd kfs dmao