Musitronics Mu-Tron III Envelope Filter with PS-1 Power Supply

Classic vintage envelope filter featuring Mode (LP/BP/HP), Peak, and Gain controls for iconic 70s funk and auto-wah textures. Includes dedicated toggle switches for high/low frequency range and up/down drive direction, paired with the original PS-1 external power supply. The metal chassis shows significant oxidation and surface rust on the sides and bottom, though the top faceplate graphics remain largely intact and legible.

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