The Liquid sunshine is a Jfet based overdrive with graceful breakup and pick attack, and will not cover up the the natural sound of your guitar and amplifier. With two drive knobs, the Liquid Sunshine allows you to control the character of the overdrive rather than simply controlling overall gain. The drive knobs controls two separate gain stages, each with their own characteristics. The top drive knob pushes the overall frequency range, while the bottom drive knob accentuates the middle and high frequencies. Both are very interactive, and allow the Liquid sunshine to perform as a clean boost or treble booster, as well as an overdrive. Unlike a lot of other overdrives that use diodes to clip an amplified signal, the jfet circuitry produces no “sharp edges” or hard clipping. Many tone knobs on overdrives have a very narrow band of useful settings. Instead, the bottom drive knob on the liquid sunshine controls gain and also alters the frequency response, with many useful settings over a wide range. The Liquid Sunshine now has two internal controls for bass, and treble boost. Can be powered by a 9 volt battery or 9VDC adaptor with a negative center 2.1mm barrel style plug. Current draw is less than 10mA.