Review on Nobsound 100W Full Frequency Mono Channel Digital Power Amplifier Audio Mini Amp (Black) – Superior Sound Amplification for Audiophiles by Matt Simpson

I also wish they had put a standard RCA jack for the mono input, but this can easily be bypassed. They deliver 50 watts of sound into 8 ohm speakers. Use 2, one for the left channel and one for the right. Best of all, if one of them fails (nothing makes that impression) I can just signal in series and feed both speakers 50 watts each as 4 ohms x2. It will be mono, but it's nice to have fault tolerance. I used my power amps at 150 watts each and realistically 150 watts is no louder than 50 because you have to double the power to get 3dB louder. 50 watts per channel is really good for most people. 100% suitable for people using indoor speakers in a normal room. So, TL:DR, these speakers pack some serious sound, they're tiny, well built and built to last. Buy a 24V AC/DC adapter to get all the power they can provide.