Link to all the spec's and info you may need. https://hifi-wiki.com/index.php/Yamaha_M-35 . Nice Yamaha M-35 amp. Works perfectly. Used it for my height speakers in 7.2.4 setup. Only reason for selling is I bought another Rotel to match the rest of my separates. Good cosmetic condition, just for a small dent on the left bottom corner. Please refer to the pictures. Please see my other listings. Happy to ship at the buyers risk and expense.