The Boss PS-6 Harmonist at a glance:

• Stereo pitch shifter and harmonizer for electric guitar.
  
• Monophonic harmony mode with up to three voices and key and interval selection
• Polyphonic pitch shifter with selectable interval
• Polyphonic Detune effect with selectable degree of detuning
• Polyphonic Super Bend effect with selectable rise and fall time
• Rotary switch for selecting the effect mode
• Balance, Shift and Key controls
• Stereo outputs
• Connection for optional expression pedal
• Sturdy metal housing in compact pedal format
• Powered by 9 volt battery or optional AC adapter
  

Pitch Shifter

The polyphonic pitch shifter of the PS-6 Harmonist by Boss shifts the played note or chord up to two octaves up or down and allows expressive electric guitar playing. The Shift knob selects the interval by which the note is shifted.

Harmony Mode

In Harmony mode with monophonic tracking, the Boss PS-6 adds up to two additional voices to the played sound to create the illusion of multiple electric guitars being played. Here you have the option to guarantee the played key and the generated intervals for fantastic sound experiences with correct representation.

Detune

For guitarists who want to use the targeted detuning of their guitar for musical expression, the Boss Harmonist offers the Detune mode. This mode shifts the tuning up to 20 cent up or down, whereby the polyphonic tracking also includes chords.

S-Bend

With the ability to shift the played note by up to four octaves, the Boss PS-6 Harmonist's S-Bend mode will make any tremolo system green with envy. Rise and Fall can be used to determine the times it takes to reach the shifted note and return to the original note. In S-Bend mode, the Boss Harmonist's footswitch acts as a momentary switch, so it's only active as long as the switch is pressed.