It’s been about 12 years since our last Mu-Tron III Rehousing blog post. Since then we’ve made a few refinements and now have what we’d consider a standard combination rehousing and overhaul. The goal is to shrink down the footprint of the original pedal while also adding in modern features from our standard Mutron Overhaul modification.
We start off this mod by taking the circuit board out of the stock enclosure and removing the multi-colored rocker switches. The circuit board is then installed into the new enclosure measuring about 4.7″ x 5.7″ now with the in and output jacks on the sides instead of the back of the pedal. DC input jack just barely visible on the left side as well.
For modifications we go with the three big ones that make up our Overhaul mod:
1. Install a new footswitch that’s wired for true bypass and put in a status LED that lights up when the pedal is active. No more turning the gain knob and having it adjust your bypassed volume level once the pedal is converted to true bypass.
2. Install a standard 9V DC jack and a voltage inverter so you no longer need to track down an original 18V power supply. Unfortunately after the rehousing there’s no longer a 9V battery option due to space limitations in the casing.
3. We add a sensitivity knob to fine tune how wide the filter opens. You can still use the stock Gain knob to roughly adjust the volume and then dial in the filter’s sensitivity separately without impacting the overall volume. The sensitivity knob is designed to complement the Gain knob.
So there we have it. Same original tone, some nice-to-have updates, some expanded controls, all in a smaller package.
