Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 50W�2+100W, 12V-24...

TOA P-924MK2 900 Series II 240 Watt Single-Channel Modular Amplifier RCA Input 1

6-Zone App-Controlled Matrix for Multi-Room Audio, iOS/Android Compatibility

Portable Headphone Amp with Bass Boost & Volume Control - 16-600Ω Compatibility

Bluetooth 5.0 Stereo Amplifier - 4 Channels, 1200W with USB/SD/FM Compatibility

160W Bluetooth Mini Amplifier - High-Fidelity Sound with AUX/USB Compatibility

JadeAudio KA1 Tiny USB DAC Amp - Multi-Device Compatibility

ZKTB21 Bluetooth Amplifier Board 2.1 Channel 50W+50W+100W IPEX1 DC 1224V