This 2-channel Rocktron Gainiac guitar tube preamp packs enough heat (and gain) for even the most hard-core metal heads! With over 70dB of gain and an incredible EQ circuit, the Gainiac can deliver any tone under the sun. By turning up a special "Scoop" control, you suck out the midrange frequencies and produce the heaviest sounds imaginable. Use the bottom and top EQs to shape the lows and highs. The clean channel delivers the warm, punchy sound that guitarists of every persuasion love to hear.