As of August 2026, Stacked Overdrive is retired.

MXR Pitch Transposer · Stacked Overdrive

Stacked Overdrive

Stacked Overdrive

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Pitch Transposer

[ owner photo · MXR Pitch Transposer ]

The M-129 Pitch Transposer, a 2-space rackmount pitch shifter from MXR's rack line.

[ owner photo · MXR Pitch Transposer ]

The M-129 Pitch Transposer, a 2-space rackmount pitch shifter from MXR's rack line.

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