Hello, you are looking at a *** Peavey Architectural Acoustics WMA 150 Wall Mounted 7 Channel Mixer Power for parts or repair *** The knobs move freely. Missing 2 knob tops - see pic. Power chord severed - see pic.   This came from a musical repair shop that has been open for the last 28 years and has been kept safely in our heated, dry warehouse. No way to test. For parts or repair only.    Measurements 15"  X  25.5"  X  5" with out the case Selling as is for parts or someone with repair knowledge to repair. Units are sold as is, final sale. Any questions or concerns please call or text (TWO-03) 313-9396 Thanks, Rick!!!