I used this at home, but I no longer have a need for it. There are no particular problems, but since it's a used item, please understand that it's non-refundable, non-returnable, and non-exchangeable (3N). I think you should replace the two front filters. - Model: PR-8023 - Output Terminals: Speaker terminals - Fan: 2 cooling fans - Input Terminals: RCA input - Power Switch: Yes - Volume Adjustment: 2 volume knobs Thank you for looking.