BT30D-S: Simple Use and Updated Version: Fosi audio BT30D-S Bluetooth 5.0 amplifier is updated version for BT30D, perfect for DIY excellent home audio system you wanted.
BT30D-S: Applicable to Bluetooth and RCA input: BT30D-S supporting Bluetooth and RCA input can drive most home passive speakers, passive/powered subwoofer. SUB volume/Frequency, Bass/Treble control ensure Hi-Fi music quality.
V1.0B: 【Rock Solid】Advanced circuitry design, built-in speakers protection circuit, solid aluminum chassis.
V1.0B: 【Drivable】Connect to your MP3/Phone/PC/Echo Dot as input, 50W x2(4 ohms, 20 Hz - 20 kHz, 0.04% THD) can drive 2Ohm - 8Ohm speakers.
What you Get: V1.0B Amplifier, BT30D-S Amplifier, Other Accessories, 18-month worry-free warranty and friendly customer service.