Fosi Woopker BT20A Pro 600W Bluetooth 5.0 Hi-Fi Power Amplifier

Very powerful for a small budget friendly amp. Sound is clean and crisp paired with a of OSD 5.25” patio speakers. Bluetooth feature is great and connects every time with no hassle. Pre-out feature allows a powered sub to be connected for volume control. Very pleased and will be purchasing a few more Fosi amps.

So far so good. I opted for the 48v power supply and I’m pleased with the output. However, I am concerned about how hot the unit gets. I’m surprised they don’t have any vents on the unit. I guess we shall see how long it lasts.I would have given it 5 stars, but concerned about the longevity.

I’ve had similar Class D amps that aren’t as powerful that put out as good if not better sound. I thought maybe it was the power brick they came with, so I upgraded to the 48V, but there was little if any difference. I got 2 with big expectations, and if they could be bridged I’d probably be happy, but as it stands — “Meh.” On the up side, they are nice to look at, which is a bonus for me since they’ll most likely be used as paper weights.

Just installed with a 48v power supply. Runs 2 / 10 inch wall mounted Blaupunkt single voice coils with channel bridges, 2 / 6 X 9 Ceiling mounted Blaupunkt quad axials, and an Earthquake subwoofer to Huge sound. Not for audiophiles, who pick apart every bit of quality sound, but it knocks pictures off of the wall. Lots of punch.It's a Magic LITTLE Box with a Copper Knob.