High-powered SA-9B E power amplifier, RCA input, speaker output compatible. - Model Name: SA-9B E - Input Terminals: RCA - Output Terminals: Speaker terminals - Power Adapter: DC 32-34V - Standby Function: Yes Purchased 3 years ago. Used for 2-3 hours a week for the first year, but then I bought another amplifier and put this one away in a drawer. I am selling it now to organize my equipment. The sale includes the main unit and the power supply only. Thank you for looking.