Sort of. Here's what I did. the JE MMSR Preamp has 3 knobs, the Vol, Bass/Treb and Mid/MidFreq. They're wired closely together, so I relocated the rotary selector to the 4th knob position so that the preamp could fit. 5th knob is the tone control module (came with 0 documentation, bought form Best Bass Gear). It comes with three wires as it can be used with East preamps that take two pickups (common ground). However, the MMSR preamp is for "one" pickup (rotary switch goes into the input of the preamp), so I wired two of the 3 wires to the input of the preamp (it piggy backs on the input screw retainers, so your + will have the hot from the rotary and one of the tone knob wires, the - will have the rotary ground and the second tone knob wire). Hope that helps!