Body only Functionality confirmed Volume control for low-impedance circuits. Connects between effect loops to control only the volume up to the previous stage. ■ Guitar Effects Pedal ■ Volume Control ～From the manufacturer's website～ ■ IN (Input Jack): Connect the cable from the amplifier's effect loop SEND terminal or the output of an effects pedal. If you are using multiple effects pedals, change the connection position depending on your playing style. ■ OUT (Output Jack): Connect the cable to the amplifier's effect loop RETURN terminal, the input jack of another effects pedal, or, if this unit is placed at the end of the effects system, to the amplifier's input jack. ■ Volume (Volume Control): Changes the magnitude of the signal input to the input jack. Turning it fully to the left (counterclockwise) results in a volume of 0 (no sound). Turning it fully to the right (clockwise) results in full volume (fully open). It uses a large characteristic knob, assuming operation by foot. ■ Note: This product is a volume control exclusively for low-impedance circuits. If you connect it directly to the output jack of a passive circuit electric guitar, the high-frequency characteristics will deteriorate, resulting in a so-called muffled sound, and the volume will also decrease, but this is not a malfunction. Basically, connect it within a low-impedance circuit, such as in the effect loop or after the effects pedal, similar to a general low-impedance volume pedal. Also, even if connected after the effects pedal, if their switch circuits are "true bypass" specifications, it becomes a practical passive circuit when all effects pedals are OFF, and the high frequencies will deteriorate, so please be careful. ■ Passive type, no power required ■ Dimensions, Weight: 120W X 60D X 55Hmm, 190g Type: Electric Guitar