Your Cart is Empty



EVENTIDE H90 Harmonizer®

Beyond the Effects Horizon

Discover why top artists and producers have chosen Eventide for over 50 years with the H90 Harmonizer®, Eventide’s next-generation multi-effects pedal. Whether you want high-quality bread-and-butter effects or experimental sounds unheard, the H90 has everything you need to inspire your creativity with an intuitive UI designed with players in mind, 62 effect algorithms, and hundreds of Program combinations curated for a variety of instruments and genres. With its comprehensive I/O and flexible routing options, the H90 is designed to be the heart of your rig.

New Technology, New Effects

The H90 Harmonizer features modern ARM-based architecture derived from the world’s most powerful effects processor, Eventide’s flagship H9000 Harmonizer. This paves the way for the ongoing creation of more advanced effects processing techniques. As a result, the pedal not only offers the iconic reverbs, delays, modulation, and pitch-shifting effects of the H9 Max but goes far beyond with ten new powerful algorithms including state-of-the-art, fast-tracking, and warble-free Polyphonic Pitch Shifting. Eventide’s proprietary SIFT (Spectral Instantaneous Frequency Tracking) technology clears the road ahead for next-gen effects both long-imagined and unimaginable.

Prism Shift
Head Space
Bouquet Delay
SP2016 Reverb
Instant Phaser
Instant Flanger

That’s not all. The upgraded DSP power of the H90 enhances the performance of all previous H9 Max algorithms. We’ve also developed new features and enhancements, such as quantization and improved pitch tracking, as well as additional features previously only available on the dot9 pedals and plug-ins.

Twin-Turbo Program Power

Two of these already impressive algorithms can be combined into a Program to create novel, inspiring sounds. The H90 Harmonizer’s dual algorithm design features true spillover between Programs, series or parallel effect routing, and flexible I/O.

Two Mono Inserts

Two mono inserts allow you to incorporate outboard effects in any configuration or combine them for one stereo insert. Optimize your signal flow with instrument or line level operation and full gain controls to incorporate the H90 into your rig or make it the centerpiece.

Dual Mode

Dual Mode lets you do things like connect using the four-cable method or process two independent stereo instruments at once! Let the H90 Harmonizer take you beyond the effects horizon.Dual Mode lets you do things like connect using the four-cable method or process two independent stereo instruments at once! Let the H90 Harmonizer take you beyond the effects horizon.

Factory Programs

The H90 Harmonizer comes with hundreds of factory Programs that can be loaded using either SELECT or BANK mode. In SELECT mode, you can navigate your Playlist sequentially without ever missing a detail thanks to the OLED display. In BANK mode, you can quickly load from a bank of three Programs, perfect for cueing up the range of sounds for a song. Organizing your favorite sounds has never been easier, simply load a new Playlist and you’re ready for the next gig! 

Live Performance Machine

The H90 Harmonizer is a live performance powerhouse! The front panel has been reimagined with five push knobs, seven LED buttons, and a hi-res OLED display for greater hands-on control and parameter feedback. 

In PERFORM mode, you get six programmable footswitches. Map functions like tap tempo, preset and insert bypass with momentary states, and performance parameters like reverb freeze, pitch flex, or delay repeat. Furthermore, you can make multiple instantaneous parameter changes with three HotSwitches.

Comprehensive UI

The comprehensive UI allows you to control any parameter with ease. Adjust expression mappings by hand with the PERFORM HotKnob and engage up to six individual assignable parameters with the three push-button Quick Knobs. Get even more control with two inputs for expression pedals or auxiliary switches with up to three buttons. If that’s not enough, take advantage of the pedal’s extensive MIDI control. 

Flexible Routing Options


  • Preloaded with 62 effect algorithms:
    • 10 new effect algorithms: Polyphony, Prism Shift, Bouquet Delay, Head Space, Weedwacker, Even-vibe, Wormhole, Instant Flanger, Instant Phaser, and SP2016 Reverb
    • Includes all 52 effect algorithms from the H9 Max Harmonizer with enhanced features and improvements
  • New low-latency Polyphonic Pitch Shifting with SIFT (Spectral Instantaneous Frequency Tracking) technology
  • ARM-based architecture lays the foundation for new and exciting creative effects
  • Use two algorithms at once per Program
  • True spillover between Programs
  • Route effects in series or parallel
  • Instrument or line-level operation
  • Two mono inserts or one stereo insert can be positioned anywhere in the signal chain
  • Dual-mode for processing two independent stereo signals at once
  • Five push-turn knobs for more tactile control
  • Two expression inputs for pedals, up to 3-button auxiliary switches, and CV signals
  • Use H90 Control software to edit Programs, create lists, and update firmware on a Mac or PC
  • Built-in tuner

Inputs 1 – 4

¼ inch TS mono jack

Outputs 1-4

¼ inch TS mono jack

Exp/Ctl 1-2

¼ inch TRS / Expression pedal or Aux Switch

USB Type-C

Use USB 2.0 for control, updates, and MIDI


Five-pin DIN (Female)

MIDI Out/Thru

Five-pin DIN (Female)

DC Input Jack

5.5/2.5mm plug / Center Positive (+)

Input Impedance (Inst. Level)

>600k ohms

Input Impedance (Line Level)

>80k ohms

Output Impedance

220 ohms

Recommended Load Impedance

10k ohms

Maximum Input Level (Inst)


Maximum Input Level (Line)



12V DC @ 1A / Center Positive (+), 5.5/2.5mm jack

Dimensions (Product)

English: 6.5″ (W) x 5.25″ (D) x 2.5″ (H)
Metric: 170 (W) x 136 (D) x 68 (H) mm

Dimensions (Package)

English: 10.5″ (W) x 7″ (D) x 3″ (H)
Metric: 265 (W) x 180 (D) x 75 (H) mm

Weight (Product)

1.85 lbs / 0.84 kg

Weight (Package)

3 lbs / 1.36 kg

Shipping Contents

H90, Eventide Sticker, 4x Rubber feet, Guitar pick, Universal power supply with plugs (US, UK, EU, AUS), USB A to Type-C cable, Quick Reference Guide

Customer Reviews

Based on 3 reviews
Maurizio D.

Years ago my first guitar teacher brainwashed me (in a good way) with music and gear, the name Eventide got firmly stuck in my memory ....I have always loved messing with sounds and now, i can finally get lost for hours twisting/bending/pitching........different sound sources through this small (in size) signal processing wonder!

If you are looking for me and can't find know where I will be :-)

On the tech side. I have set up the H90 as a dual external effect in CUBASE and integrated MIDI an expression pedal and footswitches to round it all off. This set-up and the H90 routing options give me super flexibility.

A shout out to Deluxe guitar for the fast and fuss free service and the best H90 price in Australia at the moment.

Hang on....what time is it? Got to's H90 O'clock...

Thomas Baker
Very happy with this one!

I loved the sounds of my H9s, but I hated having to use the iPad app to control them. The H90 is so much more streamlined to use. Much more user friendly with all my favourite Eventide presets available any time! With the Morningstar MC6 Pro I can see this one replacing a lot of my other pedals!

Daniel Masasso
Swiss Arm Knife of a Pedal

I bought the H90 to use on guitar and also for use with a hardware synthesizer. It works fantastically on both. It has everything, from a simple slap back delay to full on weird pitch shifting...and everything in between. The sound quality is first rate, even the overdrives and distortions sound great. I'm even using it as an external effect for software instruments in my DAW...avoiding having to buy 3rd party plugins.
The only issue I have found is that the H90 control app is a bit unstable on my laptop, but this isn't a biggy as it's just a matter of restarting it if it crashes...and you don't even need the app to program the pedal. .it can all be done on the pedal itself.
Top marks for Eventide and also Deluxe Guitars for getting it to me with no complications!