The BOSS Chorus Ensemble CE-5 delivers a wide range of chorus sounds. I purchased this pedal new and have used it on a pedalboard. Velcro is attached to the back. In my subjective opinion, it's in very good condition. Please note that all sales are final and no returns are accepted. - Model Name: Chorus Ensemble CE-5 - Output Type: OUTPUT A (Mono) / OUTPUT B - Input Type: INPUT - Number of Knobs: 4 - Power Supply: 9V Dry Battery / AC Adapter - Adapter Connection: For BOSS PSA Adapter - Check Lamp: CHECK LED Thank you for looking.