Vintage Digital & Analogue Studio Effects

Vintage Digital

Eventide H3000-D/SE Ultra Harmonizer

Eventide H3000 D/SE Ultra-Harmonizer®

There is perhaps no more revered effects box in history, as the Eventide H3000. To many it has never been bettered, and never will. More than thirty years since it was first introduced, the Eventide H3000 is still used in studios around the globe and on stage by musicians everywhere.


Regardless of the fact that Eventide themselves have since produced better effects boxes than the H3000 in terms of sonic performance and features set, the H3000 continues to be the one everyone wants. From guitar players to studios, the Eventide H3000 is legendary.

The Eventide H3000 Ultra-Harmonizer is a family of products based around a multi-purpose programmable, digital audio signal processor. The products that make up the H3000 family are:

The Eventide H3000-S (Studio), the Eventide H3000-SE (Special Edition). the Eventide H3000-B (Bandcut), the Eventide H3000-3+. the Eventide H3000-B/LT, the Eventide H3000-D/SX, the Eventide H3000-D/SE, the Eventide H3500-db: and the Eventide H3500-dfic/e. The H3500 models are also available in broadcast versions.

We call them Ultra because they do more than our earlier models. To begin with. they have full stereo pitch change. They also are digital reverbs. And they’re a lot more. The Eventide H3000 is capable of creating effects you’ve never herd before. The Eventide H3000 is fully MIDI controllable, with click less, real-time MIDI control. The Eventide H3000 has all these effects, and more, at your fingertips:

  • DIATONIC SHIFT – A pitch shifter that stays in key
  • DUAL SHIFT – Two separate pitch shifters
  • LAYERED SHIFT – Two pitch shifts from one input
  • STEREO SHIFT – Mono-compatible stereo pitch shifting (maintains stereo imaging)
  • REVERSE SHIFT – Backwards-talking pitch shift
  • SWEPT COMBS – Six sweepable delay lines, with stereo panning
  • SWEPT REVERE – A dense reverb with smooth sweep capability
  • REVERB FACTORY – A full-featured reverb with EQ and flexible gating
  • ULTRA-TAP – Twelve delay taps with full control over panning, level, and delay, Includes a diffusor to generate dense gated reverb effects.
  • DUAL DIGIPLEX – A stereo delay with smooth delay change
  • LONG DIGIPLEX – A 1.5 second delay with smooth delay control
  • PATCH FACTORY – A “modular” effects program which lets you design your own effect. “Patch” together delay lines, filters and pitch shifiing to create never-heard-before effects.
  • STUTTER – Get that sound – effortlessly
  • DENSE ROOM – Our densest reverb, with unique front/back position control
  • VOCODER – This is our version of the classic vocoding effect
  • MULTI-SHIFT – Two six-octave pitch shifters, two delays, panning and patchable feedback paths make this program incredibly useful.
  • BAND DELAY – A multi-tap delay line feeding eight resonant bandpass filters make for some sounds like you’ve never heard.
  • STRING MODELLER – This program lets the H3000 double as an extra voice in your MIDI rack
  • PHASER – A wonderfully thick, smooth, phase-shifting effect that is hard to beat
  • MOD FACTORY – The latest algorithms that add effects such as delay ducking, BPM delays and sweeps, compression, manual flanging, smooth auto panning, audio triggered sweeps and much more
  • HS322/395
  • SAMPLER – Included in the H3500 – dfx, digitally records up to 11.8 seconds stereo or 23.7 seconds mono audio (47.5 seconds of stereo or 95 seconds of mono audio with the H3500 – dfx/e)


Optimum Performance from the Eventide H3000
To obtain the best performance from your new Eventide H3000 certain operating principles should be applied. Use the “hottest” input levels possible without clipping. A digital gain device is used in the input section which allows front panel control of levels. This device works best when it is “turned all the way up” in other words when it attenuates least.

At the factory, we chose pro levels of +4 dBm, and internal jumpers I through 4 should be in the “+4 position” so that the gain control devices will hardly attenuate. If consumer -10dBm levels are used, the jumpers should be moved
accordingly so that your unit can operate at its optimum, high levels.

For best signal to noise ratio, always set the input level control so that the top bar of the level indicators flashes from time to time. If this results in output levels that are too “hot”, reduce the output levels, not the input! If you are using sensitive inputs (-10dB) you may want to pad the H3000 outputs so that you can operate the output level control near the top of its range and retain its full variation. Suitable attenuator pads are available from stores, or may be constructed with an XLR connector, two resistors, and an appropriate connector.

In order to reduce line noise through cable pickup, an instrumentation amp is used at the input to cancel noise. This is called a “differential input,” and enables the user to mount the H3000 remotely without fear of signal degradation. If you don’t use differential inputs, proper termination of the cable is desirable. For instance, if you only use pin 3 hot of the input XLR connector for signal (the standard), pin 2 should be tied to ground.

The output is differential also and “in-phase” with the input when “dry signal” is selected. If a single ended output is use, leave the unused pin unconnected. The output amp is capable of driving 600 ohm lines up to +21 dBm with negligible distortion.

Normally the H3000 will be rack mounted in a standard 19 inch rack. It is advisable to keep the rack well ventilated and in a dry environment so heat and moisture won’t cause degradation of performance, Since the EVENTIDE ULTRA HARMONIZER  has almost no internal connectors, it should hold up well under “road conditions”.



Quantization: 16 Bit
Sampling Frequency: 44.1
Frequency Response: 5Hz-20kHz
Dynamic Range: 92dB
THD: Below 0.01%

Delay: Up to 23.7 seconds or 95 seconds with H3000 DFX/e
Pitch Variation: 3 octaves up, 3 octaves down

Dimensions: 483mm x 343mm x 89mm
Weight: 5.9kg

Plug-In Options

Eventide H3000 Factory
The H3000 Factory combines the pitch, delay, modulation, and filtering that made the original H3000 Ultra-Harmonizer® a studio legend.
Eventide H3000 Band Delays
With the H3000 Band Delays you can play an effect like an instrument. Every parameter can be automated or manipulated in real time via MIDI. Play a filter with a keyboard controller to get not only rhythmic, but also musical results.

Try our new favourites feature to collect and build your own dream effects rack!

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Listen to Eventide H3000 D/SE Ultra-Harmonizer® Samples


Guitar Dry

P15 Hammer Gud

P152 3 Plus Of Me

P171 Flesh 4 Fantasy

P214 Death Flange

P217 Dual 910s

P231 Micro Pitch Shift

P246 Shimmerish

P306 Bright Room

P423 Voc Doubler BC

P515 Magic Air

P519 Micro Pitch Shift

P578 Bobs Room

P581 Canyon

P642 Crystal Echoes

P652 Psycho Panner

P700 Air

P708 Big and Long

P709 Big Chorus

P712 Bounce Verb

P716 Deathless Room

P717 Delay to Wash

P718 Echo Bound

P719 Endless Cave

P720 EZ Chorus

P723 Heaven

P723 Hell

P725 Hexa Chorus


Drums Dry

P563 Empty Closet

P78 Guitar Room

P114 Dense Room

P114 Dense Room 2

P114 Dense Room 3

P114 Dense Room 4

P193 Room of Doom

P213 Dark Room 1

P213 Dark Room 2

P230 Locker Room 1

P230 Locker Room 2

P248 Small Room 1

P248 Small Room 2

P262 Twirling Room 1

P262 Twirling Room 2

P278 Flutterous Room 1

P278 Flutterous Room 2

P282 Marks Med Dark 1

P282 Marks Med Dark 2

P306 Bright Room

P323 Locker Room

P330 New House

P356 Tonal Room

P368 Accurate Room

P371 Bass Space

Empty Closet

P381 Double Space

P382 Dense Hall 2

P387 Drum Ambience

Drums Continued...

P391 Gated Room 2

P393 Great Drumspace

P427 Ballad Snare

P432 Dark Cellar

P433 Daves Place

P434 Dith Verb

P436 Drunkit

P439 Duck Verb

P442 Fat Flam

P466 Gated Kick

P447 Gated Snare 2

P450 Hat Room 1

P450 Hat Room 2

P457 Kit Flanger 1

P457 Kt Flanger 2

P458 Lexy Room 1

P458 Lexy Room 2

P459 Lite Room 1

P459 Lite Room 2

P460 Long Room 1

P460 Long Room 2

P476 Short Room 1

P476 Short Room 2

P478 Small Tiled Room 1

P478 Small Tiled Room 2

P555 Ambience 1

P555 Ambience 2

P562 Drum Ambience

P563 Empty Closet

Eventide H3000 D/SE Ultra-Harmonizer® Reviews

Have you owned this product? Let others know what you thought of it.

Community Score


(4 Reviews)

Build Quality 82%
Sound Quality 92%
Usefullness 97%
Mojo/Funk 97%
Reliability 86%

What other owners say...


By Carlos

Build Quality 90%
Sound Quality 100%
Usefullness 100%
Mojo/Funk 100%
Reliability 90%

This is one of my all time best fx processors ever and will never be beat; ever so don’t try just buy. That’s right boys & girls this lil sucka has the balls and warmth of tape. You can run a Casio through this gal and it sounds like a friggin church organ. Its layout is jacked with the 1 knob but just run it midi & your all good. Now I’ve had 3 of these suckers and 2 had issues, so be wise if ya buy. But never underestimate the H3000. Yes the Reverb’s are not as strong as the Lexicon yet they are a more creative Verb.

The reason they are so sought after is the sound output you get with the fx bypassed. Like running it through a Studer or SSL desk it just adds punch and clarity, compression & warmth on any sound with fx bypassed. It sounds so freaggin gooooood. The best effects in the box are the Phaser, Flanger, Compression, Delay baby & Shimmerish , Dual H910, Canyons, Stutter & Hell. Be warned these babies are temperamental due to age but the sound is all worth it. Please take care of this jem.

Wizard in a box

By Simon Alexander

Build Quality 65%
Sound Quality 90%
Usefullness 90%
Mojo/Funk 85%
Reliability 75%

This box has pretty much all the effects you can ever use under it’s lid. Sonically, is so clever, but like a lot of early tech from the 80’s it suffers with some real annoying issues. Make no mistake about the quality of what it delivers… From reverbs to quirky delay to pitch shifts, it’s so clever and the quality of what it produces sonically.

To this day, H3000’s are really commanding good prices because they have their own distinctive sound. The operation is easy to use and presets can be recalled either by keypad or by a rotary dial selector. The 2 x 40 display is really nice too, but there is one major issue ALL H3000’s have… and that’s the psu HUM ! It’s deafening!

Like a few other items I can mention from the 80’s that were make in a metal chassis.. this thing is annoyingly noisy! I put my transformer on thick rubber grommets and it’s helps, but you can still hear it. The rotary dial is also very delicate and if they break, there are no spares… Gripe aside, I simply love it’s diversity and difference. The chorus patches are phenomenal and other than the fact the presets follow no logical order of storage, you’ll find something interesting to use, somewhere..

Yes Yes Yes!

By Bernd

Build Quality 85%
Sound Quality 75%
Usefullness 95%
Mojo/Funk 100%
Reliability 95%

Still killer after all these years!

By Anonymous

Build Quality 95%
Sound Quality 100%
Usefullness 100%
Mojo/Funk 100%
Reliability 85%

It is the original and if funk and mojo are your thing then it is still the best! Nothing sounds like it, there are certainly boxes that sound better in terms of clarity and transparency but that is not why this box is so cherished. Hard to understand until you own one.

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