The H90 Harmonizer, dubbed the “next-generation multi-effects pedal” by Eventide Audio, is the replacement for the H9 multi-effects pedal and one of its standout features is a low-latency technique for improved polyphonic pitch changing, along with ten additional effects and much more!
The H90 is larger than its predecessor and comes with a revised control layout. Two knobs, Select and Perform, sit on either side of a sized-up display, while the large centre dial of the original gets wholly omitted.
With a new control arrangement, the H90 is bigger than its predecessor. While the original’s big centre dial is completely removed, it has been replaced by two knobs, Select and Perform, placed on either side of a sized-up display.

There are 10 new effects in addition to the 52 in the original. These include Polyphony, Prism Shift, Bouquet Delay, Head Space, Weedwacker, Even-vibe, Wormhole, Instant Flanger, Instant Phaser, and SP2016 Reverb. With limitless customizability and parameter tweaking options, these vary from polyphonic chord deconstruction to enormous pitch-warped reverbs.
This time, each programme can have two effects running at once. Furthermore, effects can be routed in parallel or in series, and there is a real spillover function between programmes.
The H90 also includes three algorithms from Eventide’s rackmount processors: the legendary SP2016 Reverb with the Room, Stereo Room, and Hi-density plate reverbs from the original studio rackmount device; and authentic imitations of the world’s first studio phaser and flanger—Instant Phaser and Instant Flanger.
Features
- 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
The Eventide H90 is available now worldwide. Learn more at eventide.com.

