AIYIMA A07 Premium TPA3255 Power Amplifier 300Wx2 HiFi Class D Amp Mini 2 Channel Stereo Amplifier with Pre-Out for Desktop Bookshelf Speaker Home Audio System & DC32V 5A Power Adapter

The AO7 2-channel power amplifier has become a classic in the "ChiFi" budget audiophile universe. This new "Premium" edition has made an already great value even better. Aiyima has redesigned the amp with better quality internal components, enhanced heat dissipation, a better layout for the rear side connections, and improved cosmetics. It still has all the original virtues, with plenty of power for even power hungry speakers, great sound with no noise and highly detailed transparent sound, a pre-out and a volume control, user-changeable op-amps, etc. You can push even more power by using a 48v power supply, but I am finding the stock lower voltage PSU is all I need. I can't get over how well these little powerhouses stay cool to the touch even after a full day at high volume. I have one of these running a near field desktop set-up, and I have dedicated another to Atmos height speakers in my home theater. I have already ordered a third AO7 Premium for a 2 channel music system in my reading room, and I expect I won't stop there. The A07's are outperforming (and therefore replacing) much more expensive amplification I have owned and appreciated for years. These tiny amps are certainly the most bang for the audio buck you are ever likely to find. Highest possible recommendation!

TLDR; ELAC Debut 2.0 + Aiyima A07 + OP275GPZ Op Amp DIP = you'll thank me later. I have an IOTAVX amp with Triangle Borea BR03 combo that I compare this with. The IOTAVX combo has more deeper bass and sound stage but really not by much... I love both. Let's just say had I only gotten the ELAC Debut 2.0 + Aiyima A07 + OP275GPZ, I would have been really satisfied. Heck, I wouldn't even know which combo I pick if I HAD to choose.. So yea.. wow! Also, I have very sensitive ears due to being young and dumb standing next to a speaker in a club for hours and not realizing that I was going deaf when I got out of the club. Now whenever I hear speakers with too much pressure from bass my ears go into a fritz and it sounds like a broken speaker. So I can only buy speakers that don't make my ears hurt. Some no-no brands for me were Creative Gigaworks, Edifier S2000MKIII, Fluance Ai41 to name a few. Triangle Borea BR03 and ELAC Debut 2.0 is great for my ears. Background: I bought a set of ELAC Debut 2.0 B5.2 Bookshelf Speakers during Christmas cause it was on sale, originally I was only looking for a tiny computer speaker that could make some noise when I was playing games but the sales and thought of getting something good made me go down this rabbit hole. So I had to look for a cheap desktop amp cause I didn't want to take up too much space.. saw the Aiyama 07 amp and read the reviews, sounded good. Powerful enough for any speaker and small footprint. Then one particular review caught my eye.. they changed Op Amp DIP and the sound made a huge difference. Being a tinkerer I couldn't resist. Scared of breaking the amp? Don't be, it's pretty easy to open.. just use one of those L shaped hex wrench and unscrew the top 2 screws of the amp. There's a small phillip screw in the back that you need to remove. Then loosen, don't completely remove the bottom front with the hex wrench and you can pop the top piece right off. Use a mini needle nose plier to remove the 2 Op Amp DIPs that are located near the front. Note what direction the half rounded side of the DIP is going into the sockets. Slowly pull upward without squeezing the plier too tight until you loosen it. There are 2 of them. Pull them both out. Now the hard part, putting the new OP275GPZ in. Just use the plier to slowly lower it down into the holes but MAKE SURE you are matching the side that has the half rounded (as opposed to the straight edge side) down on to MATCH the drawing (white layout) on the board. If you put it the wrong way and turn on the amp, you'll blow it to smithereens. It's easy to match up though.. just pay attention and look at the drawing on the board. Anyways, after you have inserted both.. close it right back up and enjoy! Comparison of Op Amps: Based on reviews that people left on Aiyima A07 review page, I did AB testing on a few Op Amps. 1. First original amp as-is. It was okay, Nothing special but powered the speakers okay. I thought maybe the speakers were only okay. 2. So, I bought LME 49720NA NSC Op Amp DIPs ($11 for 5) cause people said this was pretty good upgrade. But man.. it sounded like the left side was softer than the right and I had to +loudness on the left side to sound equal. Played it for a bit just to make sure I wasn't hearing things.. nothing special in separation of instruments, no sound stage as a matter of fact. 3. I finally tried the OP275GPZ ($15x2) and if this one didn't work, I was going to go all out and buy some Sparko SS3602 Dual Discrete Op Amp that people were raving about but it was significantly more expensive ($80 with 15% off). LUCKILY, I didn't have to go that far as to buy the Sparko.. curious as to what it might sound like but i don't wanna use that much money to test something. Anyways, These OP275GPZ are INCREDIBLE. The sound separation or sound stage from these ELAC is like from above your head to about as far as your arms can reach. There is very very clear separation of each instrument. And it sounded louder than all the previous DIPs that I tried. This one is just amazing. In fact, I think I'm writing this review just for myself so I won't forget what I did when the Aiyama breaks a few years down the line. You will hear a huge difference.. I'm re-listening everything now and it's just AMAZING. Enjoy! I will be leaving the same review on OP Amp and speaker review pages.

I have kind of a funny use case for this amp. I have an old Logitech 5.1 set (like, almost 20 years old by now). It was a high quality set at the time and the speakers still work but the channel amps are integrated into the subwoofer housing. At least one channel has died, so to get stereo out, I have to hook a speaker up to a rear output and run a weird mirrored x2 config. At this point I don't want or need 5.1 on my desk since I have a good headphone rig there and a real HT setup in another room. But I do occasionally want speakers for a game, video call, background music, etc. It turns out your options for this are mostly real cheap computer speakers or moderately expensive nearfield monitors. In my case, I already have a nice Schiit DAC and a PC source, and those Logitech speakers that do still work. Adding the Aiyima amp tee'd off the DAC gives me a really easy way to power a pair of the speakers for less than 60 bucks. Flip the switch and dial up the volume and that's it. I can switch between headphones and speakers by just turning on the speaker amp or the headphone amp. This Aiyima has seemingly loads of power and simple front controls. The design is a bit industrial but it works and sits nicely on top of my other all black gear. There are no extra inputs or tone controls or wireless inputs, which may be a pro or con depending on what you want to do with it. This amp has the better class D chip and sound quality seems pretty good. I do think the speakers I'm using are not amazing, they're small and tuned to work with a subwoofer. At lower volumes they sound pretty veiled or muddled but at higher volumes they're not bad, and actual speakers would be even better I'm sure. The only reason I took off a star is that the packaging of amp and power supply is a bit ridiculous. They are almost the same size! I get that the intent is for the amp to sit on a desk or in an entertainment center while the power brick is hidden away somewhere in the back. I'd rather just have it integrated in a somewhat larger case, even if that takes away from the "So much power in such little amp!" oohing and aahing.

Prodotto validissimo, ma io avevo la necessità dei controlli di tono.

Bon rapport qualité prix! Surpris par sa puissance par rapport à sa taille. Bonne qualité sonnore sans être exceptionel.

Honestly speaking you can't get anything better below 10k in terms of sound and overall clarity throughout the frequency spectrum, talking about loudness and dynamic range , i must say it blows me away specially considering it's little and compact size the amount of loudness this tiny amp can deliver is unbelievable i use a pair of 6ohms hifi speaker and they just sounds amazing I also plugged huge 10" 8ohm pa speakers to it and they sounded amazing!

Works well feels like a good piece of hardware. I bought a aux to Bluetooth converter for about £15 so maybe look for a version with an inbuilt one?

Soy un audiófilo. Tengo un amplificador de potencia DMA-200 espectral (el modelo actual es de $ 400,000mx) que se arruinó, por lo que estaba buscando un amplificador de potencia barato para poder usar mi sistema de altavoces Magnepan Mini Maggie ($ 50,000mx) a un nivel degradado. Tengo auriculares electrostáticos Koss ESP/950 (~ $ 20,000mx), y escucho música de muy alta resolución: DSD256, que en mis auriculares Koss suenan más detallados que DSD128 en comparaciones A/B. Tenía bajas expectativas de un amplificador de potencia de Clase D, ya que leía que los AMP de Clase D eliminan las altas frecuencias en la música. Este amplificador de potencia A07 (<$ 2000mx) cuesta menos que incluso cualquiera de mis cables, la mayoría de los cuales son audiococitos. Mi DAC es un RME ADI-2 Pro (~ $ 46,000mx), que reproduce con precisión frecuencias de más de 90 kHz. Las mini maggies son precisas hasta aproximadamente 40 kHz. El Koss es preciso a aproximadamente 35 kHz. El Koss, conducido directamente del ADI-2 Pro, suena un poco mejor que las mini Maggies impulsadas por el A07. Cuando el DMA-200 espectral funcionaba, los Mini Maggies rivalizaron los auriculares Koss, pero la diferencia con el AMP A07 es increíblemente pequeña. Y como puede ver por las diferencias de precios, el A07 es realmente sorprendente. También quería mencionar cómo estoy alimentando el A07. Tengo un suministro de energía de laboratorio que estoy ejecutando en serie para duplicar el voltaje. He intentado de 30 V a 45V. Los Mini Maggies requieren mucha potencia, y son mejor conducidos por un amplificador de clase A como el DMA-200. Encuentro que conducir el A07 a 40+V da mejores resultados que a voltajes más bajos. La fuente de alimentación de 32 V/5A que vino con el A07 funciona muy bien, pero recomiendo una fuente de alimentación lineal de mayor voltaje para obtener mejores resultados.