TC Electronic POLYTUNE 3 Ultra-Compact Polyphonic Tuner with Multiple Tuning Modes and Built-In BONAFIDE BUFFER, Compatible with PC and Mac : Amazon.co.uk: Musical Instruments & DJ
BOSS SY-200 SYNTHESIZER EFFECTS PEDAL – Advanced BOSS Polyphonic Guitar Synth Technology in a Streamlined 200 Series Pedal for any Guitar or Bass – ...
ALABS ORBITAL Pitch Shifter Pedal for Electric Guitar,Octave Pedal with 9 Shift Types,Harmonic,Analog Dry Through,Momentary operation,True Bypass,True ...
EHX Electro-Harmonix Pico POG Polyphonic Octave Generator Mini Guitar Pedal