Aiyima a07 op amp upgrade tpa3255 review. Power amplifier chip: TPA3255.

Aiyima a07 op amp upgrade tpa3255 review. #1. The specs also list a healthy increase in output power with a stouter power supply. Jan 1, 2021 · The A07's frequency response is very dependent on the load you attach to it. Tldr:-JBL Control1 Pro:-reactive dummy Sep 28, 2023 · I think Aiyima did miss an opportunity by not adding a trigger in for the A07 max, especially when having the ability to run it in mono mode. I have made a thorough THD and IMD vs. My setup is DAC limited for example. 2. Amp with RCA in, sub out, volume and power switch. The TAS5352 amplifier IC is very old (current TAS5352 DS is 2007) and is NOT recommended for new designs. Lastly the unit isn't balanced unless you buy two of them, so keep that in mind. Another one to add to Aiyima’s list of: “let’s add another variant around this same TPA3255 amp. With lower voltage (24V10A) - no such thing, very nice sound, clean etc, with added bonus of amp being cool. The power caps in Aiyima a04 ( black board or green ) are rated at 35 V. Sound May 14, 2022 · This is a review and detailed measurements of the AIYIMA A07 desktop amplifier based on TPA3255 class D amplifier chip. Sep 28, 2023 · The 3. Bluetooth: QCC3034 aptx-hd. With regards to audio quality, the Aiyima A07 is a well designed amplifier. This is the first time for an Aiyima product. In awe. Aiyima themselves rekommends lm4562 as the best for this amplifier. I feed music from HiBy FC4 dongle unbalanced of course. Functionality it is like the Aiyima A07. We know that both A07 max and ZA3 have input sensitivity lower than 1V (ZA3 is probably around 0. The clue is in the name of the amp as far as the chip goes. Using the same SE output on my IEMs and headphones, I can hear noticeable noise from CPU working and the audio on/off pops. 0 2x225W 4 Ohm - Audiophonics. All-NEW Black Aluminum Appearance. To be fair, the tone controls circuit should be shorted before reviewing testing as having tone controls will reduce the SINAD, you can see in the testing pictures (A07/84, TB10D Jan 1, 2021 · Jan 12, 2021. The Fosi Audio BT10A PRO is a small, compact and powerful Class D amplifier, offered at a resonnable price. 3A power supply that I purchased has been working fine with my A07. Judging from 32V and 48V test results - lower voltage, higher ampreage will produce least noise. The model name is a bit confusing but oh well. The AIYIMA 04 uses the lower power 175W TPA3251 IC. For those who want to do just that, it is difficult selecting which op amps to “roll with”. With AIYIMA A07 I just stick to what works - same 24V10A power supply. 5mm line out and banana plugs for external stereo speakers. com. So, if the one you want to compare it to is too, you will not hear a big difference, if any difference at all. Question was raised on the revision of the board and thermal characteristics of the unit so here we are. 3W when the amp is turned off) 6. High-quality products made in Japan are used for the speaker output filter inductors. Jun 26, 2021 · Literally increased my listening rooms ambient room temperature by 4-5 degrees fahrenheit just having it on for an hour. Jan 1, 2021 · The OP275 has a available slew rate of 22 V/μs and a bandwidth up to 9 MHz. While it may be flat with simple resistive loads (like the ones Amir uses), a reactive load like a speaker can lead to a different response. More separation, clearer sound stage, and tighter bass punch. As can be seen the slew rate and bandwidth for any of the two op amps by far exceeds the spec required for 20KHz. Higher-impedance (8+Ohm) and louder (100+dB) would benefit from a higher voltage PS. Jan 1, 2021 · Nope. Jan 1, 2021 · There's not much to gain with regards to audio quality between 2 well designed amplifiers. Generic chinese TPA3255 amp + LRS-350-36 (36V 350W) I don't know whether any chinese TPA3255 amp has a 12V voltage regulator that is safe with 36V power. Sep 28, 2023 · Temporarily have Fosi V3 with stock OP amps, he sounds a little warmer than 07 Max, also when putting the volume knob on at 10 o`clock aiyima has a disbalance in channels Fosi doesn't have it, also when turning off the amplifier knob on Fosi click differently than aiyima I think is 100% different potentiometers is used. Aug 31, 2023 · Although, I could see the “all in one” appeal for non-critical listening, or as a desktop amp. Impedance: 4-8 Ohm. Bloody hell. Nov 1, 2022 · This is a review and detailed measurements of AIYIMA A08 Pro stereo amplifier with Bluetooth support. The Aiyima A07 on the other hand looks too powerful for my 80W rated speakers, therefore presenting a risk for my speakers overpowering/volting them for some reason. In the review of the Fosi V3 (Fosi Audio V3 Amplifier Review ), Amir wrote “There are replaceable op-amps for those of you who have nothing better to do than mess with the design. Bluetooth 5. Jan 7, 2021 · While I appreciate the diligent curiosity of PMA in his tests, it may not be reasonable to expect continued reliability of a product that is stressed beyond its expected performance -- namely, the limits implied by the bundled 32-volt 5-amp power supply, as opposed to Aiyima (and others) cutting-and-pasting Texas Instrument's chart of absolute Jan 1, 2021 · Also, more specs and performance measurements of the TPA3255 chip: TPA3255 315-W Stereo, 600-W Mono PurePath™ Ultra-HD Analog-Input datasheet (Rev. to/3bV7HDAwww. 24C to 26. And AIYIMA A07 TPA3255 operates at 600kHz carrier frequency. It is so nice to see a VU meter on an amplifier! This one actually seems high quality with nice ballistic response (fast jump, a bit slower retard). In other words, the distortion of this op amp is Nov 24, 2022 · AIYIMA A07 Pro. Aug 14, 2021 · Aug 14, 2021. 03% when working continuously. It would have been great if the A300 had followed the footsteps of previous AIYIMA amps but with more power. Jan 1, 2021 · The TPA3251 can also operate at a slightly higher PWM frame rate frequency (600kHz) than the TPA3255 (450kHz). Nov 1, 2022 · Nov 1, 2022. And as of this shipping, it also included a 32 volt, 5 Jan 1, 2021 · Building another TPA3255 amp, robbed the motherboard of another A07 stuffed it in this case, had to modify it remove rca's from board, wire new RCA and also speaer terminals. Jan 21, 2022 · This is a review and detailed measurements of the AIYIMA A07 desktop amplifier based on TPA3255 class D amplifier chip. I use mine with the opa2604 as I love the sound of those op amps in almost everything these days. Alas, you are saddled with two boxes and cheap and potentially non-safety compliant parts. •. Alas, it delivers on more power at the expense of noise and distortion. Namely it is almost always 4 ohm. Therefore, it is the same stereo 2ch as RCA input and can be used for both input and output. amplitude measurements of my AIYIMA A07 TPA3255 amplifier, with LM4562 opamps (reduces noise and distortion slightly compared to original NE5532), powered from Mean Well RS-100-24 SMPS set to 27Vdc voltage. Though op-amp rolling is fun to tinker around with, I have an easy 2 dozen op-amps in my collection each of which holds it's rightful Jul 8, 2020 · This AIYIMA A07 small Hifi stereo amplifier adopts Texas Instruments TPA3255 high-performance low-distortion high-power Class D amp chip and NE5532 Dual op-amp chip,With lowest noise, distortion, clipping,Very Quiet,Runs Extremely Cool,Easy to set up. The connectivity ports are located on the rear and include red/white RCA inputs, 3. 5MM full-range output for powered subwoofers and speakers. Next up: Rolling the T8 tube to a 5670 GE Triple Mica Nos Valve Tube. 5A) Jan 1, 2021 · Just got Aiyima A07 with Dali Spektor 1 for my desktop to replace Bose Companion 20. I normally power the 1. ASR member pma measured the A07's frequency response into reactive loads in this thread. Reply. 0 2x130W 4 Ohm Red - Audiophonics. From the TI datasheet you will read. 00003% total harmonic distortion and noise (THD+N). " Jan 1, 2021 · Higher-impedance (8+Ohm) and louder (100+dB) would benefit from a higher voltage PS. Some internal parts are different (like capacitors). fr. Features: 1. Quick Guideish : ++ & please do more research, can’t go slapping on diff kinds of IC’s on double OPamps for “better” results. Apart from the tone controls, both the Fosi Audio TB10D and the Aiyima A07 seem similar. Sep 28, 2023 · Model : AIYIMA A07 MAX Product name:A07 MAX TPA3255 Power Amplifier Stereo Max Output Power(switch stereo mode)：300Wx2 / 4Ω（48V/12A） Mono Max Output Power(switch mono mode)：600W/ 2Ω（48V/12A） (R+ connect to speaker +, L+ connect to speaker -) Working Voltage：DC24-48V，5A or more Jan 1, 2021 · I want to increase SNR by pairing AIYIMA A07 with a better power supply. Appears like other Aiyima TPA3255 amps were also using 50v cap, like A07, A07 pro, etc. The fact that I could find at least 2 op amps from ADI that easily worked shows how easy it would be to try different ones. This is an incorrect information. One channel driven, 4ohm load. s3raphim. Sep 26, 2019 · It shows good results. 3) Good Sound Quality: Use TPA3255 high performance and low distortion class-D power amplifier chip; 4) Can Upgrade Op Amp Chip: Adopts dual op amp chip,and the design of the op amp chip can be replaced,such as updated to OPA series, LM series, MUSES series, which can meet the needs of more audio enthusiasts Sep 8, 2021 · Sep 8, 2021. Although I believe the original Op Amps to be genuine, the OPA1656 does seem to make a positive difference. That is a voltage gain of 28 times. Nov 15, 2023 · well, since i last posted, i ended up buying two aiyima a07 max amps w/the 48v/5a power supplies. Jan 1, 2021 · Ariamella said: The unit includes a PSU so you don't even need to worry about it. Nov 18, 2023. I am hesitant to use a Mean Well, because I am not sure which wiring I The Aiyima a07 runs very cool normally but was getting pretty hot to the touch when the ambient temp was 38c. Really impressed with the details and balance, and also got a little surprise. Product description: Product Name: A200 TPA3255 Bluetooth Power Amplifier. Jan 1, 2021 · Just received the Fosi Audio TB10D(new version) and Aiyima A07 from Amazon. 002% Signal-to-noise ratio: 90dB Nov 26, 2021 · In case you feel the need to replace the op-amp, replace it with opa2604, opa2314, lm4562, jrc5532. 0W idle with a laptop-style 48V 3A power supply (3. For desktop use, these are probably acceptable compromises. Jan 1, 2021 · AudioArchitech said: Aiyima: "Currently, the op chip used on AIYIMA A04 & A07 is NE5532. This is a teardown of the AIYIMA A07 TPA3255 Class D Amplifier I just reviewed. I am also a fan of the OPA1656 in these amplifiers. Jan 1, 2021 · The advantages of this type of PS is you can feed up to 3 devices with the same PS. View attachment 152591. This IC has an output half bridge maximum Mar 6, 2021 · Finding a low cost, small and high performance amplifier has been an impossible mission until recently. Amplifier chip: TPA3255. 0W when the amp is turned off) Sep 4, 2021 · Pleasantly surprised. Just installed the Sparkos op amps. Jan 1, 2021 · [edit] I noticed that three pictures of this amplifier show different sizes of heat sink, with the original unit that Amir tested being the smallest. In addition to the lower voltage supply, I will be drilling some ventilation holes in the bottom and top of the case for better cooling. Some op-amps if not correct for the amp circuit can cause oscillation and bad things can happen. Sep 8, 2022 · This is a review and detailed measurements of the AIYIMA A200 stereo amplifier with USB DAC and Bluetooth. There are a few builds of the products named A04/A07. There are now amplifiers based on a new chip from Te Jan 1, 2021 · Synergy4 said: The Aiyima D05 has more functions and features, but maybe not as low distortion for some applications. Jan 1, 2021 · If your source player, or preamp has high enough output, with the A07 volume set to maximum (the typical/right way, when using it as a power amp), then for sure the A07 will clip if you crank the preamp's volume high enough, and it won't take much for that to happen if you are using the 32 V power supply. Sep 28, 2023 · Agreed 100% about the idea that an outfit like Fosi or Aiyima could do very nicely to compete with the module-in-a-box amps featuring Hypex and Purifi. It's a simple but powerful mini amp for your stereo home speaker amplifier system Jun 24, 2022 · Simce @amirm apparently told Aiyima that he was not interested measuring/reviewing the Aiyima 08 after measuring the A07, I wish he could measure and review the Audiophonics TPA-S100. Cheers. The Muses01 is also a very good choice of op amp upgrade for this amp. I must say, I was not remotely prepared for what I heard. You clip these things and they turn off. I agree completely, Duncan that it seems strange the manufacturer would, theoretically, ship this with a 32V rather than a 48V power supply but as demonstrated in Amir’s review, the amp works infinitely better with a 32V supply than none! Jan 7, 2021 · Nope. Built-in high-power HIFI special high-efficiency switching power supply, directly inserted into 220V. 3. Feb 16, 2022 · Amplifier stabilizes quickly: Conclusions. Jan 7, 2021 · by liu yeqiang on Jan 07, 2021. I particularly don't like devices that have double up on op-amps input and driver. It was sent to me by the company and costs US $139. May 1, 2023 · Internally, the A07 Pro uses the same TPA3255 amp chips featured in the original A07. Aug 14, 2021 · My experience with feeding cheap/weak ClassD amps (Alientek D8) was that with higher voltage (36V) I got mildly harsher sound, to the degree it wasn't listenable to me. These designs have just been copied year after year. One of the areas HiFi has been crazily expensive over the decades has been amplification IMO and I personally would love for amplification to be less 'object-of-admiration' and more 'toaster'. " Then say: " OP275: Better resolution, low frequency and sound field than NE5532 ". Quad, a reliable and once revered amplifier and speaker maker, made several changes to their preamps and power amps in the life of each, the 303 having production tweaks, standing the supply caps upwards Jan 1, 2021 · Addicted to Fun and Learning. So the DAC contribution to the noise will be roughly 28 times more than what Amir actually measures in a review. Jan 8, 2022 · AIYIMA A07 TPA3255 Review (Amplifier) This is a review and detailed measurements of the AIYIMA A07 desktop amplifier based on TPA3255 class D amplifier chip. I need a small monoblock for driving a center channel and was initially considering the A07 max but I will probably end up with upcoming Fosi ZA3 which has a trigger in. Aug 14, 2021 · a typical amplifier has around 29dB of gain. Read honest and unbiased product reviews from our users. AIYIMA A07 TPA3255 vs Fosi Audio TDA7498e. com) Aliexpress has a lot of sellers selling the same products. Aiyima was gracious enough to send me a unit for review and evaluation. 1-48khz Supported format: sbc/aac/aptx/aptx-hd Replaceable OP amp chips: SR3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. Better bass response and not as sharp high end than the Aiyima. Jan 2, 2021. Several power vs distortion graphs show, performing this product is quite stable. I am not sure why it is on Kickstarter to launch, but I backed it since I was hunting for a simple amp. Disclaimer - No measurements I was in need of replacing my sound bar, and thought of getting tube pre-amp or amplifier and so recently got this unit - Aiyima T9 Pro (Amazon, 159$ after 10$ discount) to use with ELAC DBR 62. I'm also ordering OPA2134 opamps to replace the NE5532's that are stock. YMMV, but I hate amps where bluetooth is prioritized over the wired input -- been there, done that. May 11, 2023 · A little more expensive than the A07 but worth every penny. Enough for me to find it noticeable. Quite a strong, muscular sound. Dec 20, 2022 · Yeah, I wish Aiyima would offer a truly improved version of the A07 with higher-quality caps, better heat separation via a larger case, improved Op-amps, integral power (like the SMSL AO100), subwoofer outputs and ventilation holes in the case. It will greatly reduce any 60 Hz modulation. The NE5532 has a available slew rate of 9 V/μs and a bandwidth up to 10 MHz. Power amplifier chip: TPA3255. 239,301. I don't own the Aiyima A07, but early last year I purchased their lower-power A04 amp (TPA3251) for a "portable" system that I use with a 12v Talentcell 38400mAh Jan 1, 2021 · The Crown used to be my "summer" amplifier because it was so cool and the Aiyima a07 now makes it look hot! Here are my measurements: 3. Which is the "official" one is hard to tell. The good news is, they’ve already contacted me to hopefully resolve this. The use of audio-specific inductive, to ensure that the sound is crisp and powerful. The AIYIMA A07 PRO amplifier has a metal enclosure made of scratch resistant aluminium with a detachable front panel and rear panel. Nov 8, 2023 · Photos: 3 amps side by side (MAX, Fosi V3, original A07), close up of front of the A07 MAX, rear panel of the MAX) This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. Its distortion is very small, with only 0. I gave it high marks for very low distortion at extremely low budget price. i also bought four akliam lc2 discrete class-a op amps; cost was $60 shipped. The cost is US $72 on Amazon including prime shipping. Sep 28, 2023 · If Aiyima markets the MAX as having replaceable Op-Amps, it should be easier to change those out, as was true for the original A07 and A04 amps, which was very easy. Apr 26, 2023. Changing it with a better one should improve performance noticeable. I guess we can only suggest to upgrade it to 63v for better safety. Sep 26, 2019 · TPA3255 (Haven't been tested much by people) Generic chinese TPA3255 amp + a 32V 5~6A adaptor. This is the most hassle-free option for TPA3255 at this moment. All else being equal, based on my experience, TPA3251 has a more detailed and airier sound, though on certain speakers it will sound grainy and dry compared with the smoother sounding TPA3255. Jan 1, 2021 · It is known to have a very crappy power unit, barely able to supply a stable 24V, whereas the AMP-chip can do 26V. Features：1. With its D3 class D amplifier, O-Noorus offers a compact, powerful amplifier with the essentials. #883. It would be a challenge to tell the 2 apart in a blind test. It was kindly purchased new by a member and drop shipped to me. And, after playing with a half-dozen of PS bricks for a TRA3255 amp . 3W idle with a laptop-style 24V 3A power supply (1. Low-impedance (4Ohm) and/or lower volumes (80-90dB) would be cooler with 24V (and you would not even need/tap into your high 10A current), yet with similar SQ. Number of channels: 2. Adopt original TPA3255 chip. View attachment 152590. sylphaudio. I decided to remove the DC jack off the board and route it for now where the AC mains would be. This IC has an output half bridge maximum recommended operating voltage of 38V. Controls are simplicity in themselves: push in the volume control to select input (RCA or Bluetooth/USB). I would use a 32V power supply with the AIYIMA 04. Distortion: 0. ”. (There are 2 sets of 2 black square parts) The TPA3255 amplifier chip is cooled using a management method of coating that uses the entire cooling houses. patreon. High precision chip resistor is selected to ensure good signal-to-noise ratio of the whole machine. If the ne5532 chips are genuine parts, it won't matter what 8 pin op-amp you stuff in there, it will sound the same. Find helpful customer reviews and review ratings for AIYIMA A07 MAX 2 Channel Amplifier Home Audio 300W+300W TPA3255 Class D Power Amp Bridgeable Mono Stereo Amplifier 600 Watt with 3. This is a review and detailed measurements of the AIYIMA A07 desktop amplifier based on TPA3255 class D amplifier chip. The competition is really high now with SMSL, Fosi, Aiyima, others are working the same space Jan 1, 2021 · FWIW, regarding the power supply discussion: the Audiophonics 100-240V to 48V 7. To sum: T8 Dac to Aiyima A07 with the 48v power supply, and now Sparkos op amps. Please check before you write an info like this. Jan 1, 2021 · I used the preferred link from the Aiyima storefront. Texas Instruments TPA3255, digital audio amplifier BTL bridge power output 300W * 2 channel design, THD less than 0. Aiyima A07 power amplifier excels in performance. Sep 4, 2021 · The reviews I've seen online report the output power with the supplied 32v 5 amp power supply and it's pretty close to the included specs. 5A Power Supply. A discrete wouldn’t do anything outstanding since the implementation is limited. base, and see how it sell. This little amp with its 36 volt/6amp power supply had no trouble driving the Revels to incredible dynamics! Resolution and detail was superb. View attachment 240550 It is so nice to see a VU meter on an amplifier! This one actually seems high quality with nice ballistic response (fast jump, a bit slower retard). You should not use anything more than 30-32 volt with this amplifier otherwise the caps can explode. LM4562 is a high-fidelity dual op amp introduced by National Semiconductor Corporation in recent years. The further i raise the volume knob of the amplifier (increase gain) the more noise i hear. Mar 6, 2024 · Aiyima T9 Pro == ES9018K2M DAC + Tube pre-amp + TPA3250 amplification. I swapped for 4562s in my Aiyima A04 and A07 amps just to be sure the parts were genuine (Fosi has shown good documentation for the V3 that they are using real 5532s). 4. In AIYIMA A07 Pro, it goes through the OP amplifier buffer, so it is output only. 5 bits by a bad power supply sold with AIYIMA A07 TPA3255 amp. Jan 1, 2021 · This is a huge improvement. Dynamic range can be expanded beyond 16 bits by pairing it with a better power supply. BT30D VS BT30D Pro: MAX Power Output: 50 Watt x2+100 Watt VS 165 Watt x2+350 Watt, Amplifier Chip: TPA3116D2 VS TPA3255. A07 PRO TPA3255 Bluetooth Power Amplifier Chipset: TPA3255+NE5532+QCC304X Bluetooth: Version 5. The Class D amplifier is highly efficient, and the device runs very smoothly and quietly. The setup performs pretty decent for the price (less than 100€). The AIYIMA 07 uses the 315W TPA3255 IC. You can mod cheap power supply by adding large electrolyte capacitor between + and - wires of DC. 67C for those of you in EU. Save yourself the $230/pair. Power supply voltage: AC110V/220V (built-in power supply DC42V 7. We have no idea how much current the internal PSU can source and thus no hint at the actual output power. Mar 7, 2021 · [edit] I noticed that three pictures of this amplifier in the original Aiyima A07 thread show different sizes of heat sink, with the original unit that Amir tested being the smallest. I don't own the Aiyima A07, but early last year I purchased their lower-power A04 amp (TPA3251) for a "portable" system that I use with a 12v Talentcell 38400mAh Li-ion battery pack. #300. This would also be a good competitive feature versus the Fosi V3, which I also did not attempt because of owner reports that it was pretty hard to get in to change the Op-Amps out. Low-impedance (4Ohm) and/or lower volumes (80-90dB) would be cooler with 24V (and you would not even need/tap into your high 10A current), yet Jan 1, 2021 · Jun 30, 2021. cost was <$170 shipped. The NE5532 is a very old op amp. Recommended power supply： DC48V 7. Later ones seem to have a green board, older ones have a black one. Its amplification stage uses a TI TPA3255 chip, capable of developing a power of 2x300W under 4Ω with a high efficiency. In the end, it’s an A07. Find helpful customer reviews and review ratings for AIYIMA A07 TPA3255 Power Amplifier 300Wx2 HiFi Class D Stereo Digital Audio Amp Mini 2 Channel Amplifier for Passive Speaker Desktop Bookshelf Home Theater System with DC 32V Power Adapter (A07) at Amazon. 7's with a Conrad Johnson SS amp that is about twice as powerful (into 4 ohms) than the V3 but certainly no lack of drive with the Fosi. Nov 15, 2023 · Ideally I would like to max out the amplifier volume position in relation to matching the input sensitivity of both power amp and DAC/pre-amplifier. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. Aiyima D05 Chips set: CM6642, TAS5508, TAS5352A, QCC3008, CS8422, WM8782. com/cheapaudiomanHigh Res Music Streaming for FREE!!!!Amazon Music Unlimited Free Trial (For HD, Scroll to Sep 26, 2019 · It is recommended to use LM4562, which has a wide operating voltage range and ultra-low distortion. My 08 Pro has way more power. As I have shown many times in measurements, AIYIMA and all other class D with output LC filter outside feedback have flat frequency response only and only into resistive load that yields proper damping of the filter response. audiophonics. Jan 1, 2021 · Practically, ultimately, it depends on your speaker impedance and how loud you listen your music (ie output power). Jan 1, 2021 · O-NOORUS D3 Class D Amplifier TPA3255 Bluetooth 5. Nov 7, 2022 · Fosi Audio BT30D Pro is the upgraded version for BT30D. 5 A is to little. The output power MOSFETs have an RDSon of 60 milliohms. Assuming you don't hear the noise, it may be the right trade off in a budget amplifier. Jan 1, 2021 · Maybe some member can later clarify, so far I found a hint #467 in the TPA3255 thread that Amir probably tested the revisited design. These TPA3255 based amps seem to have good bones in them, producing above average performance for peanuts. Seattle Area. i received everything on 5 feb; ran them for a few days, and i was delighted w/what i heard. 2 is provided by a Qualcomm QCC304X and the supported codecs are SBC, AAC, aptX, aptX LL and aptX HD. LOL. I'm using the A07 (at 40V) and a tube pre-amp T1 (at 12V), just using a variable step-down transformer (like this one for 9€), to convert from 40V to 12V. 1. Sep 28, 2023 · Seems like manufacturer (Aiyima, in this case) seems to be satisfies with 50v to be used with 48v psu. And as of this shipping, it also included a 32 volt, 5 Nov 26, 2023 · AIYIMA A07 Max Listening Tests I connected the A07 Max, don't laugh, to my $23,000 Revel Salon 2 speakers as requested by a member. That Aiyima amp is going to give you at best about 60watts of clean power and it's not going to tolerate clipping like a pro-monitor amp would. . The tiny amp powers those very inefficient speakers with authority ,good bass , clear top end, decent soundstage. However I ordered it without the powersupply, because I want to use a higher quality power supply than the bundled unit. This is known information. 5mm jacks on the A07, A07Max, and Fosi V3 simply have their RCA inputs connected in parallel via resistor pads. And as of this shipping, it also included a 32 volt, 5 amp switching power Jan 7, 2021 · So this would probably be my final contribution to A07 measurements. Jan 7, 2021 · The best op-amp is no op-amp is my ultimate belief. Solidly built with metal enclosure, and quality G12 output cable. Not so anymore. Nov 18, 2023 · 67. www. I am going to recommend the AIYIMA A07 based on its performance. Output: RCA output for powered subwoofers VS 3. A) (ti. Location. It was sent to me by the company and costs about US $160. According to Amir, dynamic range of TPA3255 amp is limited to 14. The D3 features a TPA 3255 amplifier chip and an output power of around 2x130W @ 4Ω. Nov 15, 2023 · Fosi ZA3: Aiyima A07 Max: Summary: Stereo Amplifier with balanced and unbalanced inputs + Nicer looking case + Power ON/OFF is Volume knob push and hold sequence, volume re-adjustment isn't an issue after ON/OFF as it can remain same Mar 14, 2023 · FOSI AUDIO BT20A PRO Class D Amplifier TPA3255 Bluetooth 5. Output power: 300W+300W. The included NE5532 op-amps are replaceable and can be upgraded with SRT3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. These are both mini class D amps that cost about $75 and produce plenty of power to drive any speaker in a nearfield setup. Both the Fosi V3 and the Aiyima 07Max (and Jan 2, 2021 · Likes. May 25, 2021 · Aiyima A07 Amp https://amzn. This is a review and detailed measurements of AIYIMA A08 Pro stereo amplifier with Bluetooth support. Size:151*100*33MM. Fosi Audio is releasing their new V3 amp. Maximum power: 200W+200W (the maximum power is AC220V in the power supply, 4Ω speaker, distortion 10%) Impedance: 4-8 Ohm. The compact size should fit on desks well. so, i opened them up to install the op amps. 7V based in info from Audiophonics, if I remember correctly), if the DAC/pre-amp could be fixed Sep 28, 2023 · Most experienced EE folks say to leave the stock 5532s alone. It is the only basic TPA3255 amplifier with a traditional low-profile form-factor and internal power supply that I am aware of. In short TPA3251 sounds more like class-D and TPA3255 is more analogue sounding. 99. Jan 1, 2021 · Amplifier manufacturers DO make routine tweaks and changes during the life of the product. 5mm Line Output for Passive Bookshelf Desktop Speakers+Power Adapter at Amazon. Apr 26, 2023 · 43. SNR:110db. 50% on the Aiyima hits 85dB at 9’ away, compared to 90% on the v385 only measuring at 77dB. With the A07 volume button turned one half turn, it does not get warm. Nothing else to distract you. Though I must admit to not being familiar at all with any aiyima amplifiers. 0 channels/Stereo. It has two inputs, one AUX input, which is convenient for traditional wired analog signal input; there is also one Bluetooth wireless input, which can be easily connected to Bluetooth devices such as mobile phones and computers, without being bound by wires, and easily enjoy A07 PRO TPA3255 Bluetooth Power Amplifier. Jan 2, 2021 · So I would avoid the A07 TPA3255 model and concentrate on the A04 TPA3251 model as this seems to be a better balanced solution and many of us think it sounds better. I ordered an A07 with the 4562 op amps from Aliexpress. 2 Bluetooth support: 16-24bit 44. Hi all, I have ready virtually everything I could find on ASR on the Aiyima A07. Been running the Fosi TDA7498e for awhile and decided to pick up the A07 after seeing the audio science review had it beating the emotiva a-100 in testing. ” It’s at $130-135 on AliExpress and Aiyima store. I actually thought the ADI chips did sound better. er bz bx ln ub zn tr zk an rv