The Alien Comp is the same compressor circuit that is found in our 5 Star pedal the Joe Walsh Double Classic. Unlike most stomp box compressors, the Alien Comp has a natural sound and is very musical – much like high-end rack mounted compressors found in professional studios. The Ratio setting is adjustable from 2:1 to 10:1, allowing for moderate to heavy compression. The Alien Comp can also be used as a very effective clean boost. If set correctly it can boost your amp from subtle to full overdrive with just a few turns of the control knobs. To use the Compressor as a clean boost start by setting the Sensitivity control to about 3:00 o’clock. Back the Ratio control off by setting it to the 10:00 o’clock position. Set the output control to achieve the desired amount of clean boost to your amp. If you want to take control of your signals dynamics, without squashing them into extinction, the Alien Comp is your ticket to ride. The Alien Comp can be powered by using a 9v+ battery or an external power supply.