This is a used DAM-AD7000. Sound output has been confirmed using 8Ω speakers. Volume, balance, and all knobs are in perfect working order. Below are the specifications of this unit. Power Supply Voltage AC100V 50/60Hz Power Consumption 170W (at 4Ω load) Rated Output 160W + 160W (8Ω JEITA) 240W + 240W (4Ω JEITA) Input Terminals Audio 1 system, 2 inputs (A, B) * When audio is input to both A and B simultaneously, it will be mixed. Output Terminals Pre-output 1 system Speaker output 1 system, 2 terminals Subwoofer system 1 system (monaural) Headphone output Standard (φ6.3mm) 1 system Mini (φ3.5mm) 1 system Other Sound Quality Switch: [E/W] Audio Adjustment Master volume, balance, headphone volume AC Outlet Interlocked 2 Non-interlocked 1