Review on Blaupunkt AMP1804BT: Advanced 4-Channel Class D Amplifier with Bluetooth for Crystal Clear Car Audio Experience by Dave Cavazos

I was really impressed with the sound quality of this amp. For the price, this is an amazing deal. I have few complaints. When no music is playing, I hear a low hum, similar to the sound coming out of my speakers. It's not terrible, but I didn't hear it with my previous amp. I thought it might be a faulty amp so I ordered a second one but the result was the same. I would prefer if they use better quality screws for the cable connections. I had to replace the RMS screw as the original screw was ripped off when I received it. I wish it had an audio output so I could hook up a second amp without having to use a Y connector as the Y connector causes the signal going to both amps to be somewhat attenuated. There should also be a switch to disable bluetooth as I don't use bluetooth on my amp and even if I remove the antenna I see an additional bluetooth connection on my phone.