Single button control to Easy operation Single Knob Controls-VOL Attenuator VOL Attenuate lower your level for a clean sound Bringing New Combinations From Your Favorite Old Pedals With True Bypass Switching VOL Attenuator Based on the EH Signal PAD The VOL Attenuator is a passive attenuator that allows you to instantly switch to a different preset volume. It's like your guitar's volume knob, with a completely passive and color-free circuit. Have your amp volume set high for overdrive, and use the VOL Attenuator to lower your level for a clean sound - then turn off to kick your amp into overdrive. You can also experiment with the Signal Pad anywhere in your effects chain - you'll be bringing new combinations from your favorite old pedals. colour: black Material: Alloy size: 9.2x3.8x3.6cm Package Contents: 1 * Guitar Effect Pedal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.