Due to the small size and relative low cost I was quite dubious when I first connected this amp to my DCM TimeWindow floor speakers but after listening to a variety of different types of music over a period of a week now I am completely astounded by the performance. I ordered the 24v 8A upgraded power supply just to give the amp more headroom. I have also since purchased the Fosi Audio tube phono pre-amp for my Dual 701 turntable and am very impressed with that as well. This system rivals much larger Class A amps and pre-amps weighing and costing 10X-20x as much. Amazing technology and performance!
The equipment is built with very good quality, I work with speakers at 6 Oms 80 W Max, and although I cannot exploit all the power of the amplifier, because my speakers are of lower power, the audio quality and volume that supports me it is perfect. Without a doubt the BT20A exceeded my expectations.
This amp was received in the uk 8 days after purchase, amazing fast delivery. The amp was well packaged and I was able to track the parcel. The amp itself packs a punch and got a satisfying sound quality. Using the rca connectors are noticeably better than Bluetooth, the Bluetooth is not bad at all but the frequencies are restricted compared to the rca option. I am running 2x120w Sony speakers from it and they sound great, a rich full sound with impressive clarity. The amp is tiny, mine is sat upon an Apple TV and fire tv I am only 3 days in so I cannot speak for the durability but it does come with 18 months warranty.