Amazon.com: ST-838 2.1CH HiFi Audio Amplifier RMS 20Wx2+40W Stereo Amplifier with Subwoofer Output Class D Mini Digital Power Amplifier Receiver with AUX for Home,Car Speakers,Black (Power Supply not Included) : Electronics
PT270AIU.5 Pyle 300W Digital Stereo Receiver System - AM/FM Qtz. Synthesized Tuner, USB/SD Card MP3 Player & Subwoofer Control, A/B Spea…
Sunbuck Wireless Power Amplifier Home Stereo Amp bluetooth 5.0 Receiver System with LED Display, FM, USB/SD, CD/DVD Player, HiFi Audio Amplifier Subwoofer Speakers - Walmart.com
Pyle Stereo Amplifier Receiver with AM FM Tuner, Bluetooth, and Sub Control - Walmart.com