ZK-TB21 High Power Amplifier Board 2.1 Channel Bluetooth Digital Amplifier Board

Do it yourself assembly. Fun, and functional. Thanks!

Has the power it offer for it sound.

Really love this product. It is capable of a lot and has everything you need to get it bumping right away. Sound is crisp and it does not even heat up. The only downside is that in order for the Bluetooth to be fully disconnected, you have to disconnect the device from the power. Even if it's off, it will still be connected to the Bluetooth.

This is an exact replacement of the buystuffarcade amp for the Legends pinball machine.

Only had this amp since the beginning of September and it's already stopped working. Was fine, then statiky nothingness or nothing at all. Power comes on. Guess one of the components failed. A replacement would be nice!! Lol 😂

I love this product . Only problem is mount in amplifier case .

Esta muy bien, de calidad de audio pasable pero hay que ponerle una fuente de 24 v y 5 Amp para que funcione bien, si se le pone uno mas pequeño distorsiona mucho.

Works really well for the price. Was hard to find a 2.1 amp with a powered sub connection since they all have LFE sub out and cost twice as much as this. Works perfectly, just need to keep the volume knob less than 50% otherwise I get lots of background static. But even at that level, its plenty loud, could be because I'm using 8ohm bookshelf speakers. I love the fact it has individual control for sub freq/vol and L/R treble/bass as well. All these features in an amp this cheap/small is impossible to find these days.

Beautiful, complete amp, when hooked correctly.

Really impressive for the price and size. Just pretend the volume knob only turns about 3/4 of the way to max and you'll love it. Anything past 3/4 and it starts to distort. More volts is better but 12 volt works. I have it running two 6.5 speakers and a 10" JBL sub on a 16V battery and it goes all day even cranked. My little boom box compares well against a jbl partybox 320, especially outside.