Review on Bluetooth 5.0 Stereo Audio Amplifier Receiver - 4 Channel, 440W Peak Power Home Theater USB, 🔊 SD, FM - 2 Mic in Echo, RCA, LED - Speaker Selector for Studio, Home - MAMP5 by Rodney Gonzalez

I used it to control my new Polk Audio Atrium 6 outdoor speakers. Gives great sound. Not too high bass but overall great sound for a light evening. The volume can be very loud with clear tones, no distortion. The only thing I didn't like was the Bluetooth range of about 15 feet and with my iPhone 12pro I started to hear crackling in the noise. I just bought another BT adapter with a longer 25ft RCA to 3.5mm cable and now I can use my phone in my backyard and still enjoy clear music. For the price you can't go wrong. Maybe not for real sound lovers, but a great product for outdoor music or light music.