Yamaha YST-SW120 Active Powered Servo Processing Sub woofer Sub Speaker. Condition is "Used". This unit features banana jacks for output, two sets of inputs, input one is banana jacks, input two are RCA's .Also features phase selector. Great sound , Normal wear, no tears in the fabric or stains ,wood has a few scuffs nothing major does not affect quality. If there is any questions or concerns please feel free to contact us.