The Tone Job is a complete tone enhancement tool with EQ and Booster suitable for guitar, bass, synthesizer and more. Controls: Level - Post EQ volume control. Can boost the signal up to 5x the input. Unity is around 10 O'Clock. Treble - Noon is flat, boost is clockwise from noon, cut is counter clockwise from noon. Bass - Noon is flat, boost is clockwise from noon, cut is counter clockwise from noon. Middle - Noon is flat, boost is clockwise from noon, cut is counter clockwise from noon.The Tone Job take a standard 9 volt DC power supply with a 2.1mm negative center barrel. Recommend pedal-specific, transformer-isolated wall-wart power supplies or multiple isolated-output supplies. Pedals will make extra noise if there is ripple or unclean power. Switching-type power supplies, daisy chains and non-pedal specific power supplies do not filter dirty power as well and let through unwanted noise. Do not run at higher voltages! Current draw is 10 mA. Dimensions: 117 mm x 64 mm x 57 mm. current draw 10 mA. Hand made in USA