Electro-Harmonix Slammi Plus — Polyphonic Pitch Shifter Pedal

The Slammi Plus is Electro-Harmonix's full-featured polyphonic pitch shifter built into an expression pedal format, giving guitarists and bassists real-time control over pitch transposition. From subtle detune effects to dramatic three-octave dive bombs, the pedal handles it all without glitching on chords or complex voicings.

Key Features

• Polyphonic, glitch-free transposition over a +/- 3 octave range
• Three shift modes: Up, Down, and Dual
• 11-position Shift switch — includes Detune mode (17 cents) for chorus or doubling textures
• Dual mode generates two separate pitch-shifted intervals simultaneously
• X-Fade function: sweep the pedal between dry and pitch-shifted signals, or between two transposed intervals
• Pitch Mix knob controls the secondary signal level in X-Fade mode
• Blend control for dialing in wet/dry balance
• Traditional rack and pinion mechanism in a rugged, lightweight housing
• Compatible with battery or third-party power supply

Ideal For

The Slammi Plus is a go-to for live performers who need expressive whammy effects and pitch shifting that tracks chords cleanly. In the studio, the X-Fade mode opens up smooth harmonic transitions and layered pitch textures. It's equally useful for lap steel players, bassists, and anyone running a pitched instrument through a pedalboard who needs polyphonic harmony tracking without the latency or artifacts of lesser pitch shifters.