The customer decided to give the unit to the shop, but I have too many back-logs.Here are what I know;Very CLEAN front face, all knobs and ports are intact.The customer stated it went to the protection mode randomly, and it stopped working. No power on.No additional tests were done at the shop!Conditions: Not Working, refer to all picturesThis is a pre-owned item being sold "AS IS" with no returns. Case or housing: 8-9/10 as for use, minor scuffs under the regular useFront Face: 9/10 as for use, minor scuffs under the regular useAll buttons and dials: N/APods and connectors: N/ASpecificationsPower output: 250 watts per channel into 8Ω (stereo)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.003%Damping factor: 250Input sensitivity: 1.55VSignal to noise ratio: 127dBDimensions: 435 x 165 x 425mmNote: For customers in Puerto Rico, this item cannot be shipped to Puerto Rico; if you have any questions, contact the seller before bidding.