AK-380 USB SD BT.C FM AUX Audio Power Amplifier 2.0 CH 40W+40W HiFi AMP | Stereo AMP Bluetooth 5.0 Speaker Amp Receiver with 12V 5A Power Supply,FM Antenna for Car Home Bar Party

I've had this amp for several years and it has worked as advertised. It's hooked to bookshelf speakers in my shop and can get very loud if needed. All functions work however the only flaw is that once you scan the FM channels you cannot delete any channels so channels further away with static cannot be deleted so you have to scroll through them all to get to a good station.

Needed something small that could drive my speakers at my office so I gave this system a shot as it was so inexpensive. Got it in, unboxed it, plugged it in, and hooked up my Micca Bookshelf Speakers. I was floored at the power of this little amp, the clean sound (no hums or ground loops), and the ease of use. It’s quite impressive. With the capability of screwing this in under my desk and running cables over the back, it keeps my desk clean and gives me solid sound. The functionality of the Line In is clear, the Bluetooth is easy to access and pair, and the radio has a decent pickup capability when the included antenna is plugged in. It’s a really great system for the price and the size is absolutely perfect!!! Can’t wait to try it with a couple of deep full range speakers later this week!!

With a coupon this was less than $30, and was well worth it. I needed a new FM tuner for my garage which has a speaker in the ceiling. The old tuner was failing and I also had a small bluetooth amplifier that it fed into before sending output to the speaker. The amp was fine but the tuner was having issues. This allowed me to replace both with one device and have both bluetooth and FM radio like I had before, but in a much more compact package. The tuner works great inside my garage and I tested the bluetooth with my phone and it connected easily. The only reason I deducted one point is that the FM tuner doesn't allow you store favorite stations in memory. It simply has a function to scan the local area for strong stations and automatically store them. I think it allows up to about 30 stations to be stored. In any event, I was disappointed that storing stations in specific memory slots wasn't available as it seems to have been a standard function of any digital tuner (even old analog tuners!) for decades. However, one feature that made this less annoying was that the unit appears to remember which mode it was in (line input, radio, or bluetooth) when it's turned off and then back on again. Since I mostly listen to only one radio station, I can just leave it set to FM mode and that station, and it seems to restart in FM mode and still tuned to the last station. So I can just turn it on and not have to fiddle with it each time I am working in the garage. It would have been nice to easily be able to switch between my three favorite stations, but it will certainly do. Otherwise, the sound quality was fine and the volume control knob worked properly. It has good strong volume which I didn't test for its full capacity as I don't need too much volume for my one stereo ceiling speaker. It did have stereo speaker wire terminals on the back that I connected to my speaker, and a wire antenna was included for the FM, which easily picked up many of the local stations. The instructions are fairly minimal, but enough to get me started with the functionality I needed. The build quality seems fairly sturdy with the metal case which has flanges with holes for easy mounting.

This little amp sound great and works flawlessly. Bluetooth connects faithfully along powering up . Plenty of power for reasonable volume levels

Very happy with this amp. Inexpensive, compact, and loud without distortion.