Amazon.com: Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Fi Class D Integrated Amp 2.0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 (
Sunbuck Bluetooth 5.0 Amplifier Home Audio, Stereo Receivers for Speakers, with USB,SD Card,MIC in, Remote Control, 2 Channel Sound, for Home Theater Speakers via RCA, Studio Use (AS-35BU)