Check the listing for details. Shnobel Tone Optical Compressor. Condition: New. Listed at 279.00 USD. The Optical Compressor is a studio compressor for your pedalboard, with the tone control and the blend knob you are able to dial in the perfect sound for your guitar or bass that is rich with overtones and thickness that you cant get from any other pedal, the blend knob allows you to mix between your original signal and the compressed signal creating a very natural and punchy sound that is very musical. Pedal comes with a 30 day money back return policy so you can try the pedal out for your self to see if it works for your set up. Please Note: International customers are responsible for paying custom duties and import taxes. Input Impedance 1M OhmsOutput Impedance 100 OhmsPower Requirements 9vCurrent Draw 110mATrue Bypass Foot SwitchSize 3.7 x 4.7 x 1.7 Inches