Description
Tremolo pedals often force a choice between classic warble and genuinely useful control. The Shape Shifter refuses that trade-off. Its Shape knob reshapes the waveform driving the effect: dial it to center for a smooth, even rise-and-fall that nails vintage amp tremolo, or push it to either extreme for choppier, more aggressive patterns that mimic backwards tape effects or the percussive attack of an analog synth envelope.
Run it in stereo and the mini Phase control opens up another dimension — shift the two channels from fully in-phase to a full 180 degrees out, moving from a conventional ping-pong stereo spread into a swirling, immersive tone that pushes toward surround territory. On the timing side, the Speed knob or the onboard Tap Tempo footswitch covers a wide window, from a slow 0.5 pulses-per-second up past 15 pulses-per-second for near-tremolo-as-fuzz territory. Flip the Ratio/Rate mini-switch and that Speed knob becomes a tempo-division selector instead — locking to 1:1, 2:1, 3:1, or 4:1 relative to your tapped tempo, handy for staying in the pocket with a drummer. The illuminated Speed knob pulses in time with the effect at all times, so you can dial in your rate visually before ever stepping on the switch.
Seymour Duncan also engineered out the volume dip that plagues a lot of tremolo circuits, so the effect stays consistent in level as it cycles. True bypass keeps your dry tone untouched when the pedal’s off, and like every Duncan effects pedal, the Shape Shifter is designed and hand-assembled at their Santa Barbara, California factory by the same crew behind their pickups.
- Shape knob: from even, classic tremolo to extreme chop/swell textures
- Stereo ins/outs with mini Phase control (0–180°)
- Speed range: 0.5 to 15+ pulses per second
- Tap Tempo footswitch with Ratio/Rate mini-switch (1:1, 2:1, 3:1, 4:1)
- Illuminated Speed knob for visual rate reference
- Auto level compensation to eliminate volume dip
- True bypass construction, built in Santa Barbara, CA







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