mb 500 design — Gallien-Krueger,MB 500 Specs — Gallien-Krueger,Central Music - Weighing less than 4lbs and with 500 watts of output power, this bass head makes it super easy to pick up and go! Get this used Gallien-Krueger MB500 Ultra-Compact,,MB 500 Specs — Gallien-Krueger,MB-500