The Gallien-Krueger Backline 600 Bass Head can handle the wear and tear of touring. Features 300W of thunder, 4-band active EQ, adjustable contour, effects loop, Boost valve effect, XLR out with ground and pre/post switch, and tuner out. With 2x 1/4" speaker outputs, you can harness the maxiumum SPL that this head can offer. 

This bad boy will tear your face off... If you let it! This thing is loud, adjustable, and built to withstand abuse. They don't call it backline for no reason! 

This amp has seen some stages. It has been around since the early 2000's, after all. For a 20-some-year-old piece of kit, it still screams. You want this head. Come check it out today.