The Marshall JVM410H is a 100W tube head with 4 independent channels. Its power amp has 4 EL34s and 4 ECC83s in the preamp. Its four channels all have independent controls and three different modes to maximize versatility. The channels consist of clean, crunch, OD1, and OD2 with digital reverb controls for all four. On the backside of the amp you’ll find two FX loops, series and parallel. You can control all functions of the amp with the included memory capable footswitch. This amp offers the ability to achieve everything from classic to modern Marshall tones by the flip of a switch..