AIYIMA A07 Class D 2-Channel Dual 300W Amplifier

This is a great amp for the price. The TPA3255 is a bit of a beast. From crap outputs like a tv or a low/mid range motherboard there is some signal noise which is unfortunate. I'd recommend a DAC if you get this, also upgrade to a 48v PSU for another $25 or so. This is probably the most power out of a mini-amp you can get for under $100.

These are the specs from Texas Instruments website:

Total Output Power at 10%THD+N

315-W Stereo into 4 Ω in BTL Configuration
185-W Stereo into 8 Ω in BTL Configuration
600-W Mono into 2 Ω in PBTL Configuration

Total Output Power at 1%THD+N

260-W Stereo into 4 Ω in BTL Configuration
150-W Stereo into 8 Ω in BTL Configuration
480-W Mono into 2 Ω in PBTL Configuration

Note that you do have to upgrade the power supply to 48V if you want to get the 75w per channel, otherwise you'll be getting about 56w per channel out of the box with the included 32V PSU.

But 75W per channel at 8 Ω is still really good for an amp of this size and cost, it is similar to most low end receivers that cost $300 to $600 (Denon AVR-S760H for example)

I have seen good reviews, but it does always make me laugh when the advertised power is more than the draw of the amp. Maybe there is a fusion reactor or something inside? Audio has always been kind of silly like that.

No, no reactor is required The amerage rating is a nominal rating. The amperage rating on the power supply or marking on the back of the amp are average maximum draws over time.
Many if not all amps actually draw more in bursts and will not overload the system.

So a beefy amp rated at 1200watts x 2 but marked on the back saying maximum draw of 15amps could still actually produce 2400watts at maximum in burts which is all you would ever require.

In any case this particular amp will not produce a clean 300watts X 2, not even with a huge power supply. It simply will not.
Be careful with the spec sheet from Texas I. That is the chip manufacturers rating under certain optimal conditions none of which apply to design of the Aiyima, which is a cost limited design. The TI speca are for a superbly designed engineering sample with no cost saving measures taken and a 50+v powersupply.

Also for anyone note you cannot bridge this amp, you will break it. It was not designed for it. The mono examples are a different design.

This unit has been bench tested by several people with several power supplies.
ASR tested with something similar to what it comes with.
WIth either a 32/ 5a or a 48v/3a supply it was around 60-80watts per channel@4ohm and 60watts @8ohm and add another 20% above that if you allow for up to 1% THD..

Totally fine for most applications but no powerhouse. Slap on a not noob friendly 48+v/10a powersupply and maybe get sorta close to triple the clean output. Might be fun for some.

You can power 2 of them. This is only a stereo (2 channel) amp. You would need 2 of these to power all 4. (Assuming that you have an avr with pre-outs for each speaker, which most do.) 1 for front L+R and 1 for rear L+R. I just purchased the Fosi V3 (with the upgraded 48v power supply) which is similar to this to power the rear height speakers in my system, as my Denon X3800 will process 11 channels but only power 9. I also purchased the Iot relay (link below) to trigger it on as I just want to set it up without needing to turn it on and off manually every time I power on the system after the calibration.

https://www.amazon.com/Iot-Relay-...KNSOL76NXP

Do you really notice a difference with another opamp? How could you even notice such a slight difference in sound? I was thinking about trying it, but I heard there isn't much difference in sound.

Cheapest way to add Spotify to this? Trying to run some outdoor speakers. Used to have a huge receiver, but after moving the room around trying to tuck something behind a sofa.

Can anyone tell me what I need to hook two of my old Boston Acoustics speakers up to my laptop? Use case is really just conference call audio and light music listening.

Thanks, helpful. I have a denon x3700h but I'm using it as zone 2 only. I only see a pre-out for one left / right for zone 2. Assume I need a speaker selector box or a 4 channel amp then? Can I just connect two speakers into each output on the 2 channel since they're 8 ohm?

Do you really notice a difference with another opamp? How could you even notice such a slight difference in sound? I was thinking about trying it, but I heard there isn't much difference in sound.

This is a great amp for the price. The TPA3255 is a bit of a beast. From crap outputs like a tv or a low/mid range motherboard there is some signal noise which is unfortunate. I'd recommend a DAC if you get this, also upgrade to a 48v PSU for another $25 or so. This is probably the most power out of a mini-amp you can get for under $100.

These are the specs from Texas Instruments website:

Total Output Power at 10%THD+N

315-W Stereo into 4 Ω in BTL Configuration
185-W Stereo into 8 Ω in BTL Configuration
600-W Mono into 2 Ω in PBTL Configuration

Total Output Power at 1%THD+N

260-W Stereo into 4 Ω in BTL Configuration
150-W Stereo into 8 Ω in BTL Configuration
480-W Mono into 2 Ω in PBTL Configuration

Note that you do have to upgrade the power supply to 48V if you want to get the 75w per channel, otherwise you'll be getting about 56w per channel out of the box with the included 32V PSU.

But 75W per channel at 8 Ω is still really good for an amp of this size and cost, it is similar to most low end receivers that cost $300 to $600 (Denon AVR-S760H for example)

How do you connect your sub to this?

You would need a couple of adapters from amazon. male 3.5mm to female coaxial rca. But, like I said before, the only amp that I've found with a true sub-out, is the Arylic b50 se.

I have the pro version with 2.1 set up. Running 2x borea br02 and a sub. No issues.
I paid $74.99 for this AIYIMA A07 Pro TPA3255 Stereo... https://www.amazon.com/dp/B0BN8H8...b_ap_share [amazon.com]

Not sure if I missed it, but does this have Bluetooth?