FiiO K5 Pro Desktop Headphone Amplifier User Guide
FiiO K5 Pro Desktop Headphone Amplifier Buttons and ports labeled A. Input (Top: COAX / OPTICAL IN; Middle: LINE IN; Rottam. 1ICR INVI B. Gain (Top: HIGH-10dB; Middle: MID-6dB; Bottom: LOW-OdB) C. Power/Volume knob D. Status indicator light ring E.…