I checked the power, but there's no sound. I've classified this as junk. Please use it for parts. A multi-functional Pioneer stereo amplifier A-8800, with tone control for sound quality adjustment. - Brand: Pioneer - Model: A-8800 - Function: Stereo Amplifier - Volume Adjustment: Large knob - Tone Control: Bass and Treble adjustment - Speaker Terminals: 2 systems - Input Terminals: For multiple sound sources Thank you for viewing.