The US Vox Viscount models V1153 and V1154 included this accessory four button foot pedal. This pedal controlled reverb, tremolo, distortion (fuzz) and MRB (mid range boost). A red pilot lamp illuminated to indicate that the distortion was engaged. If you look closely, you will notice that there is a red colored washer under the distortion switch mechanism.
This foot pedal becomes an extension of the control panel as the switch for the distortion feature is located only on the foot pedal. There is no way to actuate the fuzz without the pedal.
The MRB foot switch is unique in that it does not have an indicator lamp and it does not have a latching mechanism. It is a "momentary" style switch. One must hold the button down to engage the effect. When you release the button, MRB is turned off.
North Coast Music offers the exact original replacement pilot lamp assembly, replacement switch mechanisms, cable, six pin connector plugs, wiring schematics, and even the special spanner style nut used to secure the switches. Click here to go to the web page in the North Coast Music web site that offers this foot pedal and replacement parts.
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