P2 is the new balanced headphone amplifier from smsl, which adopts a fully balanced design, 4-way ultra-low distortion precision linear feedback circuit, distortion as low as 0.00006%, SNR up to 133dB. Using 99 low noise op amps in parallel design, the output power is up to 12W. The specially designed volume potentiometer greatly reduces channel deviation. Switchable three gain control, low gain is specially optimized for IEM. Preamp output function, can be used as Hi-End preamp. Classic retro toggle switch operation. Super compact design, very suitable for desktop headphone system.