I didn’t expect much from the Fosi Audio P1 Tube Preamp, but it was on sale on and had a coupon as well.
FOSI Box X4 review Audio Science Review (ASR) Forum
T20 Bluetooth Tube Amplifier Stereo 50W Power Headphone Amp – Fosi Audio
Customer reviews: Fosi Audio P1 Tube Preamplifier Mini Hi-Fi Stereo Preamp 6K4 Valve Vacuum Pre-amp with Treble Bass Tone Control for Home Theater HiFi System(not for Turntable)
The Opamp thread, Page 477
TB10C 2-Ch TPA3116 Stereo Mini Amp: 50W x 2, Bass & Treble – Fosi Audio
P2 Headphone Amplifier Vacuum Tube Amp HiFi Stereo Audio – Fosi Audio
Fosi Audio P3 Pre-Amplifier review & analysis
Fosi Audio P1 Tube Preamp Review
FX-AUDIO TUBE-P1 - Review
P1 Vacuum Tube Pre-Amplifier Hi-Fi Stereo Preamp 6J1 Tube – Fosi Audio
Fosi Audio P1 Vacuum Tube Pre-Amplifier reviews
Fosi Audio Box X2 Phono Preamp for Turntable Preamplifier and Fosi Audio Box X4 Phono Preamp Headphone Amplifier/Preamp : Electronics
FX-AUDIO TUBE-P1 - Review
FX-AUDIO TUBE-P1 - Review