Of all the retro FX, perhaps the most authentic and coolest is Tremolo. Instantly calling up the spirit of the ’60s, Tremolo was the first effect to appear on a Marshall® amp in the early 1960s. Marshall has now updated the Tremolo in the form of the Vibratrem.
By using split phase modulation, an incredibly wide sonic field can be created by hooking the Vibratrem up to two amplifiers and running in stereo. The Vibratrem features a passive bypass for the main signal path to ensure complete tonal integrity and has a quality of tone matched only by its versatility.