Fosi Audio Two V3 Mono Power Amplifier - Open Box, tested with speakers

Fosi Audio 240W Mono Amplifier V3 MONO*2 + 48V 10A Power Adapter + Power Filter

Fosi Audio LC30 2-Channel Class D Desktop Amplifier VU Meter Remote Black

Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class

Fosi Audio ZD3 Fully Balance Desktop DAC Integrated Amp Converter with ES9039Q2M

NEC M-50 Mono Block Power Amplifier

Fosi Audio S3 Network Music Audio Streamer DAC Preamp XLR Sub Out/ HDMI eARC

Fosi Audio ZP3 Balanced Preamp 3-in-3-out Pre Amp Audio for 2CH Stereo 2.1 Setup