ZK-1001B Bluetooth Amplifier 100W Mono AMP Mini Audio Power Amplifier Module with TWS Box Matching Function, BT/AUX/USB Input, DC 7-24V DIY Speaker System Amplifiers Kit for Home Car

Adjust accordingly!!!!!!!!! This amp is amazing IF YOU ADJUST IT RIGHT!!! Thought something was wrong until I sent it back and got another one and it was going the same thing. After adjusting it correctly it work very good. Highly recommend

Works well and you can't argue with the great price.

Great amp, I used it for a 12” subwoofer and works great

This is actually pretty good. The volume knob is very sensitive and there is a good work-araound. I was using bluetooth and turned the volume to about half way on my phone, then adjusted the volume on the amp. This radically changed the sensitivity on the amp volume. Overall, the tone control works very well and I find it easy to adjust for the music I'm playing. Install was super easy, and the amp puts out good power with a 20v drill battery. I used a power wheels adapter to make the connection. I would buy this again.

Easy to use and assemble, I use it for my center channel Klipsch speaker and it powers it fine. Bluetooth can reach from across the room and handles different devices well

Put the heatsink on as shown in the photo. I added two small heatsinks on the ICs on the right side (knobs facing you). I only tried a USB stick with MP3 files and the AUX input (mono 3.5mm plug) to a signal generator. The volume is a switch that selects the input. I didn't try other features. I powered it with a variable power supply as I was interested in running it on a 9V battery. It draws about 0.3A (300ma) so a 600mah battery will probably actually be half of 600mah in reality so would last 1 hour. I'll use a DC power jack and connect the (-) terminal that is a switch (opens when the plug is inserted) to remove the battery. The battery I plan on using is USB-C charged. A chassis USB-C cable to male plug will be inside. The parts on the board get a little hot. Not sure about longevity in a box without good air movement. As I didn't try other features and it works as I tested I gave it 5 stars. It seems to work as intended.

Ive purchased multiple 1001u amps and they're great for the price you pay

Bought to make 2 parable speaker boxes and they work fine separately but the tws feature don't work and they won't pair together after following the pairing instructions and after researching how to pair them they still won't pair

Great little amp. Used this to replace my klipsch ProMedia 2.1 amp, night and day difference. You have more control over the sound and the Bluetooth is a great feature. One thing I would like to see maybe in a future revision is a bluetooth antenna especially if you have the unit under a very thick wooded desk. Edit: I have noticed that when I shut down my laptop there is high pitch hum coming from the speakers, I’m using high quality audio cable. Very annoying.