This JFET Transistor Boost Pedal has been designed to give you the heightened, refined and tonally enhanced sound produced by its boost circuit. The JFET circuit has three modes, N for "normal", where the gain can be typical in terms of frequency response. "F" adds a fatter sound, while "X" mode flattens the circuit down to below 10Hz, giving you an incredible sense of density without adding artificial EQ. Extending the frequency response also tightens the phase and gives you an incredible, full feel. The L control adjusts the level, it is an attenuator after the amplifier circuit and before the output driver. This transistor pedal can be used after a buffer or input driver, as well as having it always on as an input driver at the start of your pedalboard, giving you plenty of tonal options. It's been engineered to give you a "heavy" feel, with plenty of headroom, so it'll work perfectly at the end of your set. If you're looking to elevate your tone with some serious sound that's versatile in your rig, then look no further than the JFET Transistor Boost pedal.True Bypass: YesMade in: USAColour: GreyPower Supply: Adapter;9VControls: Level;Boostype: BoostBattery Operation: NoNumber of Buttons: 1UK/EU Power supply included: NoUSB: NoOutputs: Jack 6,3mmPackage Contents: ManualMIDI Interface: NoInputs: Jack 6,3mmWidth (mm): 85.0Depth (mm): 90.0Height (mm): 52.0.