Joker Pedals Solo Volume Boost Pedal can be used either between guitar and amp or in the amps effects loop as a dual channel volume control. Set the left (green) control knob to desired rhythm volume. Step on the true bypass switch activating the red LED and set red knob at desired solo level. This works like a volume pedal with two seperate preset volumes, one for rhythm and the other for leads. This does not color your guitar's tone.
This pedal is built by me with quality parts. Powder coated 1290 NS enclosure, 3PDT true bypass footswitch, two 16mm single gang audio taper 1MEG potentiometers and Neutrik 1/4 inch input/output jacks. Pedal uses 9 volt battery/adapter (Boss style) only for LED.