Each of its 4 channels, Clean, Crunch, OD1 & OD2, are independent of each other and have three modes, all 12 of which are footswitchable and feature unique gain structure. It makes the JVM 4-channel effectively 12 Marshalls in one.

The JVM410H has studio-quality digital reverb with a level control for each channel. This is also footswitchable, as are the amp’s two Master Volume controls and the Series/Parallel effects loop. Resonance and Presence are equipped with master controls.

Even though the head amp has 28 controls and 8 LED switches on their front panels, they’re simple to understand because of the logical layout. Each of the 4 channels has the usual controls, Volume, Bass, Middle, Treble & Gain, for 20 of the 28 controls. Take away the 4 reverb controls and you’re only left with 4 Master controls, 2 Master Volumes plus Resonance & Presence.

Marshall JVM

With the JVM amplifier series Marshall has the most versatile amps of all time in their product range up till now. Uncompromised tube technology in conjunction with a modern electronic control system enables an unimagined Sound variety. The sound repertoire includes the entire range of classic Marshall sounds from the last decades, coupled with the latest features such as digital reverb and a MIDI interface.