100W+100W Amplifier Board with Treble and Bass Control, DC 9-24V, BT and AUX Inputs, 2.0 Channel Stereo AMP Board for DIY Wireless Speakers, Password Free (DAJUNGUO ZK-1002T)

It sounds great, plenty of power for my two 35 watt ms 4” speakers. Very discreet “bing” sound when the Bluetooth connects to my phone. Easy to assemble and install. Doesn’t get hot. Audio pauses when I get a phone call (call doesn’t go through the amp). Solid and stable Bluetooth connection. Perfect “hidden” stereo for classic car - I left the original, broken, AM radio in the dash for looks, and replaced the single 4”x10” mono center-dash speaker with two Infinity 4” Reference speakers rated for 35 watts RMS (105 max) 4 ohm each. This receiver has more power than I need, so I have it’s volume set at 60-75% of max. I get a small but sufficient amount of base (pleasantly surprised), and nice mids and highs. I like being able to adjust base and treble. No hiss or noise. It’s loving the 13 volts my car delivers. I’m very impressed with this little receiver. No complaints, and almost free. The downside to this setup is that I need to touch my phone to adjust volume, skip songs, use Siri, etc. Also, an incoming call will pause the Bluetooth, but not route the call audio through the car speakers, and there’s no microphone,so no hands-free calling. My solution was to also buy “Aston Innovations SoundTek A1+ Bluetooth Car Kit”, and plug it into the AUX input of this little amp. Then I use the Bluetooth of the SoundTek instead of the Bluetooth on the amp, and I have everything I want: 1) Original looking (but not working) 1966 AM radio in the dash 2) Streaming music through Pandora or Spotify 3) Hands-free calling where I can hear and be heard, and use Siri No AM/FM, but who cares. The SoundTek has a 1.6” round control pad that I can hide in the ashtray or wherever. Through it I can control everything by feel, without needing to look an or touch my phone: volume, next song, previous song, pause, make a call answer/reject a call, or use Siri (voice commands). This amp, plus the hands-free SoundTek kit, sound great, and cost very little.

very nice product sound quality is good very fun to mess with

Purchased one to connect to my projector. Works really good. Surprised on how easy and good Bluetooth function works as well to connect my phone to it when not using projector.

I have only used the amp using the aux-in, not the bluetooth connectivity. I am driving it from a hi-fi DAC hat for a Raspberry pi. The amp drives my in-ceiling speakers with plenty of volume. They are rated 100w at 8ohms. I turned down the volume knob to prevent inadvertent blasting of the room without limiting reasonable loud volume when desired. The sound seems to be good. I'm subtracting one star for the teeny-tiny speaker connections. I used good size wires to install the ceiling speakers and it was a ridiculously tight fit to get them under these screws. Also if you ever need to disconnect and reconnect, you get to experience the pain again. Using connectors would be way better. Note that there are no mounting holes or other accommodations on the package, so you get to figure this out yourself when putting into an enclosure.

This little amp has works amazingly well for its size. Made a cheaper version of the turtlebox and it did the job. Works way better than expected

This amplifier is perfect for my setup! Great value for the price and works good with Bluetooth. A surprising amount of power with such a small device. I used 2 sets of 4 ohm speakers. Very crisp audio with no distortion.

Pretty loud for the size, put in a hard case with two 5 1/4" speakers and a milwaukee m18 battery. Clear, loud, and easy on the juice.

Sounds good but there is a background noise, I believe it’s from power, but I don’t know, other than that it powers the speakers well and the app is a nice addition. Bluetooth sound quality is good, and connects easily. The amp has a cool design with easy to use knobs.