The JVM Series 100-watt JVM410H valve-driven power stage is built on the classic design responsible for the legendary Marshall roar found in the JCM800 2203 and Plexi Super Lead amplifiers – a timeless foundation for countless classic rock and metal guitar tones for over four decades. Featuring a quartet of EL34 valves, this peerless design has been expertly crafted to complement the extraordinary wealth of tones found in the JVM410H. 12 all-valve amps in one Each of the JVM’s four channels has three modes – green, orange and red – providing 12 totally unique yet complementary amplifier topologies, making it like having 12 amps in one! As a result, the JVM410H offers an amazing array of instantly switchable tones – from the cleanest clean to the highest gain ever found in a Marshall and all points in between! Overflowing with harmonically rich tone and responsive fluidity, each and every one.