Saiyin Mini Bluetooth Amplifier Home Audio for Speakers, 2×80W 2.1 Channel Digital Class D Integrated Amp with 24-Bit 192kHz DAC and Optical Coaxial AUX Headphone Line Out Jack

Works as advertised and sounds good. You can hear a hum through the speakers if you turn it all the way up with no input, but for the most part it has acceptable sound and volume through 8" 3-way tower speakers. Connects through Bluetooth, but if you have an aux cable plugged in, you have to flip the switch twice. I assume that is the case for the digital inputs as well. I am happy with this item for it's performance and value.

Wasn't sure how good this would be. Powers 2 emotiva bookshelf speakers and sounds great. Feels cheap but been working issue free for over a year now.

Original setup was easy. Sound was OK. Nothing special. This product lasted about 60 days before it stopped working. Broke outside of my Amazon return time.

I had a kind of unique need to match a computer sound output to some speakers. This gave me exactly what I needed at a low price. The build quality is good.

Works well, sounds great setup as a 2.1 system on my pc. The only issue I have with it is that if left powered on, it will get stuck at the mid volume point and won't power off using the switch. I have to unplug it and plug it back in for it to start responding again. The volume knob will not respond until I do.

This little amp was worth the $50 I paid for it back in April 2024. Shocked to see it at $25 now. It easily drives a pair of Polk bookshelf speakers, and a powered Yamaha subwoofer via the line out jack. Connection via Bluetooth is instant and pain free, and connection via digital/optical cable, is a flipped switch. Sound quality is excellent for the form factor, but I would never turn the volume all the way up. This was a gift, and has lasted for several months of nearly daily use. Would recommend. Only problem I've had with it, was that the usually red LED light for the TOSLINK optical connection, turned green. Flipping the switch off, would not resolve the issue. The power adapter needed to be disconnected. Back in action.

Had outdoor speakers to bluetooth amp already in place. Needed something that could connect the optical TV audio to existing speakers. This works great. Optical cable was thinner than I expected and that worried me but the cable had no issues. I also love that it is a complete package with banana plugs, power and optical cable. Don't have to spend more piecing it together. I have no use for the bluetooth part since I already have the speakers wired to another amplifier (existing amp didn't have optical connection). I did test the bluetooth out and it works fine. However, the device did not like me switching between aux and bluetooth. Flipped the switch all I wanted but never returned to aux. The device would not reconnect back to aux without disconnecting the power and reconnecting. Depending on your use, this could become annoying. That's the only reason it isn't getting 5 stars. I would give it 4.8 stars if possible

This amp is very powerful, I was really impressed. Didn’t expect much because of the unfamiliar name, price and size. The DAC has terrible range so I plugged in the Mypin DAC. I hooked up a pair of Polk XT15 speakers and also tried a pair of Klipsch R-14m speakers and the sound is incredible. Sounds like a large A/B amp not like a class D at all. Even though the DAC has horrible range l still had to give it 5 stars because the power and sound is really outstanding. I tried it with other more expensive DACs but the Mypin with high gain sounds the best. I just bought another one just to have incase this one craps out. Who knows how long it will last but at this reasonable price it’s worth it. I test a lot of amps and DAC’s and there is no other amp in this price range that has clean power like this does !