Harmonize and Synthonize

Multi-Voice Intelligent Pitch Shifting from the company that invented it! Ten Pitch and Harmonizer algorithms that cover all the bases. All the way from the original H910 to Quadravox 4 voice harmonizer to Octave and PitchFlex effects. Also in included is Harpeggiator which creates arpeggios with selectable rhythm patterns and fuzz effects. Synthonizer for unique synth fx for any instrument. And, of course, MicroPitch and Crystals - go to sounds for inspiration.


Up to 4 voices of diatonic pitch shifting and up to 1.5 seconds of stereo delay

  • 100 Presets, unlimited through MIDI
  • Studio Quality Sound
  • Instant Program Change
  • Built-in tuner
  • Real-time control with 10 knobs, MIDI or expression pedal
  • Tap Tempo and MIDI Clock Sync/Generate
  • True Analog Bypass
  • Rugged cast metal construction
  • Metal footswitches for instant Preset access
  • Mono or Stereo operation
  • Guitar or Line Level Inputs and Outputs


H9 Control

The H9 Control app provides remote control access of all Eventide effects pedals. With H9 Control, you can manage parameters, presets and settings with an easy to use interface. Get instant access to over 500 presets that push the boundaries of delay, reverb, pitch-shifting, modulation, distortion and more. H9 Control is available on Android, iOS, Mac and PC.  

H9 Control App for Android iOS Mac and PC

Signature Pitch + Delay Effects

PitchFactor features 10 of Eventide's signature stereo or mono pitch + delay effects:

  • Diatonic
  • PitchFlex™
  • Quadravox™
  • Octaver™
  • HarModulator™
  • Crystals™
  • MicroPitch
  • HarPeggiator™
  • H910/H949
  • Synthonizer™

Artists Using PitchFactor

Annie Clark
St. Vincent
Dave Weiner
Steve Vai
Young the Giant
Young the Giant
Angel Deradoorian
Deradoorian, Dirty Projectors
Brien Brannigan
Avenue Q
Chris Carter
Chris & Cosey, Throbbing Gristle
Dan Wiese
Kill Hannah
Derrick "Hott Soss" Cummings
Patti LaBelle, Brian McKnight
Joe Berger
Jon Hammond Band, BCTD, Cymbalic Encounters
Jordi Martinez Guals
Julie Slick
Adrian Belew Power Trio
Luke Riverside
Matt Lange
Deadmau5, BT
Nobuki Takamen
Patrick Matera
Katy Perry
Samuel Hällkvist
Mat Walerian
The Uppercut, Jungle, Toxic, Okuden
Mike Kerr
Nick Tsang
Modestep, Backstreet Boys, The Ting Tings
Robbie Calvo


The PitchFactor is a pitch shifter / harmonizer / octave and so much more, adding layers upon layers of sound into your signal path, and allowing you to create and imagine more than you could before.
Pedal of the Day



Input 1 (mono) ¼ inch mono phone jack
Input 2 ¼ inch mono phone jack
Output 1 (mono) ¼ inch mono phone jack
Output 2 ¼ inch mono phone jack
Expression Pedal ¼ inch mono phone jack
Aux Switch ¼ inch stereo phone jack
USB Type B Socket. Use 2.0 cables only.
MIDI In Five pin DIN (Female)
MIDI Out/Thru Five pin DIN (Female)
AC Adapter Jack US Power Supply included

Analog I/O

Input Impedance 500K ohms
Output Impedance 470 ohms
Recommended Load Impedance 10K ohms or greater


Power 9VDC, 500mA, Tip hot (+)
Dimensions English: 4.8" (H) x 7.5" (W) x 2.12" (D)
Metric: 122 (H) x 190 (W) x 54 (D) mm
Weight 2.15 lbs, 1kG
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