If the raw, Neanderthal power of history s nastiest stomp boxes inspires you to plug in, turn on and rock out, it s time to expand your mind with the SUPER FUZZ SF300. Three Modes of Operation With the SF300 s three unique sound modes you can: channel the grittiest tones of underground proto-punk legends; update your sound into a crunchy industrial cacophony; or opt for a pure gain boost that will make your amp spew white-hot lava. Easy to Use Dedicated Level, Gain, Treble and Bass dials provide tons of tone-shaping options. A blue LED tells you when this wild thing is activated, and a top-quality on/off switch maintains optimum signal integrity in bypass mode. You can power it with a PSU-SB DC power supply (not included) or a 9 V battery.