Review on 🔊 Nobsound 100W Subwoofer Amplifier: Digital Power Sub Amp for Immersive Bass Audio (Black) by Iris Swatson

I bought the amplifier with power pack. When hooked up to just a speaker and power supply, the amp produced a tremendous amount of digital noise and noise. I've tried plugging this power supply into a grounded surge protector, it's still noisy, no other computers or electronics are connected to that circuit. Tried other speakers and shielded cable, no difference. The amp itself is tiny and well built but too loud and unacceptable to use so it was returned.