Review on 🎵 320W Hi-Fi Bluetooth 5.0 Power Amplifier Stereo Active Subwoofer Amp 2 Channel U-Disk Music Player - Douk Audio M1 PRO Upgrade by Julian Perkins

I bought two of them, one died, the other is hanging there. Very good performance. Used about 2 weeks (maybe just a few hours) before one device died completely. Bluetooth communication without an external antenna is unstable. Both amps had poor Bluetooth range, so I doubt BT v5 or its implementation is bad. This can be due to the antenna on the internal circuit board and its inner metal case. The Bluetooth codec is an SBC, so expect good sound quality over Bluetooth. I used an extra RCA input, so I didn't really care until I brought my ES100MK2 Bluetooth DAC. ES100 because it has lossless coupling, 10-band EQ and other audio filters to customize the sound for the speakers I'm currently using. The volume control isn't linear, and most of the volume ranges from 0 to about halfway (12). hour) after that the profit is minimal. Be careful not to overheat the amp and make sure you never turn the amp on at a volume above 80% for a long period of time. However, one of my units was killed. Revain returned the money for the faulty one. All in all, considering the price and availability of 32v 5 amps, good packaging and great form factor, I recommend this purchase.