Fosi Audio N2 Headphone Amplifier Portable Amp Gain & Bass Switch Audio Hi-Fi 3.5MM Earphone Headset Powered Dual-Output with Lithium Battery for iPhone, iPod, iPad, MP3 and Computers
Fosi Audio BT20A Bluetooth Amplifier, Mini Hi-Fi Stereo Amp Integrated Receiver for Home Audio Passive Speakers, BT 5.0 Class D 2.0 Channels, 100W x 2 TPA3116 Chip, Treble & Bass Control Knob
Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply (Black)
Fosi Audio TB10A – 2 Channel Stereo Audio Amplifier Receiver, Mini Hi-Fi Class D Integrated TPA3116 Amp for Speakers 100W x 2, with Bass and Treble Control (with 24V UK Power Supply)
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 Passive Speakers/Subwoofer Powered Subwoofe