On Order. 45 Day Lowest Price - 100% Satisfaction Guarantee. Affordability, power, and diverse features place the Gallien-Krueger Backline 600 head in the forefront of the product line. Featuring 300 watts of power, distortion/sustain & clean channels, full four band active EQ and adjustable contour, the Backline 600 packs quite a punch for the price!