BT30D supporting Bluetooth and RCA input can drive most home passive speakers, passive/powered subwoofer. SUB volume/Frequency, Bass/Treble control
Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Fi Class D Integrated Amp 50 Watt x2+100 Watt for Home Outdoor Passive Speakers/Subwoofer Powered Subwoofer : Electronics
Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel and P1 Tube Pre-Amplifier : Electronics
Fosi Audio T3 Bluetooth 5.0 Hybrid Stereo Tube Amp Class AB
Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Fi Class D Integrated Amp 50 Watt x2+100 Watt for Home Outdoor Passive Speakers/Subwoofer Powered Subwoofer : Electronics
Fosi Audio Box X4 Phono Preamp Headphone Amplifier/Preamplifier Hi-Fi
Fosi Audio Box X1 Phono Preamp for Turntable Phonograph Preamplifier Mini Stereo Audio HiFi With Headphone Amplifier
BT30D 2.1CH Power Amplifier Bluetooth 5.0 with Bass/Treble – Fosi Audio
Fosi Audio Bluetooth Phono Preamp for Turntable Phonograph Preamplifier With 5654W Vacuum Tube Amplifier HiFi BOX X3 With 12V Power Supply
Fosi Audio BT30D PRO TPA3255 Subjective review