Meris Hedra – 3 Voice Rhythmic Pitch Shifter & Delay


The Meris Hedra is a 3-voice rhythmic pitch shifter capable of adding 3 harmony voices to your instrument and with Tap tempo synchronised delay

Requires 9V DC supply. Draws approx 150 mA

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Meris Hedra

Meris Hedra is a 3-Voice Rhythmic Pitch Shifter

Every action has a reaction.

A single stone thrown can create riveting ripple effects, while a humble key turn can unlock a flurry of otherwise before unseen and unheard events.

This is the magic Hedra bestows upon you and your instrument, seeing you unearth new harmonic sonic chain reactions with every single note played.

What is the Meris Hedra?

The Meris Hedra is a 3-voice rhythmic pitch shifter capable of adding 3 harmony voices to your instrument.

And with Tap tempo synchronised delay available for each voice, this beauty far transcends the realms of standard pitch shifting.

In addition, pitch glide, micro tuning, 4 individual delay configurations, adjustable pitch correction and midi keyboard control all combine in making Hedra an instrument and sonic experience like no other.

You can keep it simple and just use Hedra as a standard chromatic pitch-shifter.

Or you can begin to pile on the intervals and slip into its dancing diatonic dreamscapes, via its 6 different scales and wealth of rhythmical subdivisions.

Now turn up the Glide control and hold down TAP for auto-swelling synthy portamento shifts – or bump up the pitch regeneration – and you’ll be floating away on clouds of shimmering sci-fi effects.

Hook a MIDI Keyboard or a MIDI Sequencer up to Hedra and turn your source instrument into a mind-bending tapestry of harmonies and hard-tuned pitch glides.

Although it adds an entirely new dimension to the humble six-string instrument, Hedra is not limited to just guitars.

In fact, you can use the pedal on pretty much any instrument or line-level audio signal you want.

Whether you choose to totally transform your beats on a drum machine, harmonise vocals or completely alter additional synths, loops or any other type of audio, Hedra’s advanced pitch-shifting palette is sure to transport you and your sound to entirely new sonic worlds.

Demonstrated here.



Selects key for diatonic harmonies. Set to max for chromatic shifting

Alt Function: Scale Type Select:  Major, Minor, Melodic Minor, Harmonic Minor, Double Harmonic, Lydian Pentatonic, Minor Pentatonic

Micro Tune:

Slightly detunes all three pitch shifted voices

Alt Function: Pitch Correction and Glide. When the knob is between Min and Mid select between: No Correction, Loose Correction, Strict Correction. When knob is between Mid and Max selects amount of glide


Adjusts the balance between Dry and Wet signals

Alt Function: Delay Feedback Controls delay feedback.

Series delay modes:

Pitch 3 sets the feedback loop.
Dual delay modes: Pitch 1 and 3 both add to the feedback loop

Pitch 1:

Sets interval for the first pitch shifted voice

Alt Function: Time Division 1. Sets a fraction of the main tempo for the first pitch shifted voice

Pitch 2 :

Sets interval for the second pitch shifted voice

Alt Function: Time Division 2 Sets a fraction of the main tempo for second pitch shifted voice

Pitch 3:

Sets interval for the third pitch shifted voice

Alt Function: Time Division 3 Sets a fraction of the main tempo for third pitch shifted voice


  • Advanced 3-Voice Rhythmic Pitch Shifter – from standard pitch-shifting to intricate dancing harmonies
  • Individual controls for Pitch and Time Offset for each voice • Chromatic or Key-Driven Harmony – with 6 selectable scale types via ALT control
  • 4 Delay Line Configurations with unique Feedback Routing – for infinite sound design options • Unique Keyboard Control via MIDI – puts a live quartet under your fingertips
  • Micro Tune – creates gentle chorus-like detuning, classic studio fattening and extreme warping • Glide Mode – slides between pitches at the speed you choose •
  • Choose to sweep through Intervals smoothly or hard step for dramatic pitch effects
  • Switchable Half Speed and Auto Swell for advanced textures • Digitally controlled Analog mix control
  • Stereo input and output
  • Switchable input / output headroom level for Guitar or Synth/Line level
  • Expression pedal control over all parameters simultaneously
  • Presets available via external 4-Preset switch or MIDI • MIDI in/out over TRS via the EXP jack (presets, automation, beat clock)
  • Premium analog signal path and 24-bit AD/DA w/32-Bit floating point DSP
  • Designed and built in Los Angeles, California U.S.A.

Standard 9V power 9V DC, centre -, 2.1mm, ~150mA current draw


Additional information

Weight .41 kg
Dimensions 11.7 × 10.7 × 6.7 cm
Analogue or Digital

Analogue & Digital


Silver, Black


150 mA



Pedal Type


Power Connection Type

Centre Negative

Silicon or Germanium




EAN 13







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