Voice Box

Vocal Harmony Machine/Vocoder


The Voice Box packs a multi-functional vocal synth processor into a tough and compact chassis. Sing, and you’ll have a troupe of backup singers following you in perfect harmony. Or use the built-in vocoder to unleash classic synth-robot sounds.

Diana Ross had the Supremes, Brian Wilson had the Beach Boys, Kraftwerk had The Robots. You have the Voice Box.

The harmony processor creates 2- to 4-part harmonies directly from your vocals, in the same key as your accompanying instrument. Studio-quality reverb lets you independently add depth to your dry and harmony vocals.

The focused 256-band articulate vocoder, designed by the same EMS genius who made vocoding famous, features adjustable harmonic enhancement and controllable formant shift.

Plug in your mic and your instrument, and let your new voice—or voices—be heard!


Featured Videos
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From the Blog
Posted 5/8/2014



Simone Murtas used an EHX Voice Box for the sounds and effects in this short video.


Posted 3/17/2014



Happy St Paddy’s Day from EHX. Here’s Bill Ruppert’s Effectology video showing how he turns a guitar tone into a tin whistle.


Posted 3/20/2013



Drew of theDrew covers Frank Ocean’s “Thinkin Bout You” using the EHX Voice Box Vocal Harmony Machine/Vocoder.

Posted 12/19/2011



“The envelope, please.” The multi-talented Bayu Ardianto captures a first-place win with his latest VideoSong, Inveitability, in the IndieFone Film Festival. Bayu relied on EHX pedals to help him score.

The pedals used in this VideoSong are:

1. Double Muff (electric guitar)
2. Cathedral (electric guitar)
3. Stereo Electric Mistress (electric guitar)
4. Neo Mistress (electric guitar)
5. Ring Thing (electric guitar)
6. Voice Box (pianica)
7. HOG (synthesizer)
8. LPB-1 (electric guitar)
9. Metal Muff (electric guitar)

Congratulations, Bayu!

Posted 11/17/2011



Bayu Ardianto checks in with EHX from Indonesia. This latest VideoSong from his group, Lola Bangs The Drums, is entitled Kamu, Kamu, Kamu (English translation: You, You, You).

Bayu told Mike Matthews that he used the following Electro-Harmonix gear while producing this VideoSong:

1. Voice Box [pianica]
2. Stereo Talking Machine [wah, electric guitar]
3. Small Stone [electric guitar]
4. Stereo Memory Man with Hazarai [electric guitar]
5. Deluxe Memory Man [rhodes]
6. Neo Mistress [keyboard synthesizer, organ emulation]
7. HOG [keyboard synthesizer, organ emulation]

Previous Bayu videos:

Stay tuned, more Bayu videos coming soon!

Posted 11/7/2011


Timely Tone TIp for Changing Presets.

People have complained of having to bend down during a performance to change presets on units like the Stereo Memory Man/Hazarai, The Ring Thing, Voice Box and the Cathedral.

What many do not know is that these pedals were ergonomically designed to be controlled by your feet.

The white preset/mode knob is perfectly positioned to be operated by the side of your right foot.

Use the side of your foot to select the preset position. Then carefully tap straight down on the white knob to activate the preset.

With a little practice your feet will be in control. Then you’ll be able to keep your hands where they belong…on the guitar!

Below is a demo video:

Previous Tone Tips posts:

Stay tuned, more Tone Tips posts coming soon!

Posted 11/2/2011



Help teach your kid to sing. Harmony helps them practice to be on pitch.

Posted 5/10/2011



All the way from Indonesia!  LOLA BANGS THE DRUMS as this Electro-Harmonix clad trio led by the talented Bayu Ardianto use seven EHX pedals to create a monster groove. Check out the dead-on Leslie from the HOG and POG 2 integrated with the Stereo Pulsar. Natalia Pratiwi provides super-cool vocals with backing from the Voice Box while Dika Charles Dickson’s drumming is always in the pocket.

Electro-Harmonix pedals used in this Video Song:

1. Small Stone (acoustic guitar)

2. Voice Box (vocal)

3. Deluxe Memory Man (vocals)

4. Stereo Memory Man w/ Hazarai (vocals)

5. POG2 (synthesizer)

6. Stereo Pulsar (synthesizer)

7. HOG (acoustic guitar)

Posted 4/11/2011



Here’s the latest videosong by the multi-talented Bayu Ardianto. This time he’s collaborating with Lola Bangs The Drums, a duet featuring Natalia Pratiwi and Dika Charles Dickson.
The title of the original song is “Dekati Aku” which translates to “come and get me!”

When producing this videosong Bayu drew inspiration from big band, swing music. He explained that because he doesn’t have brass instruments he mimicked the brass with his pianica and an EHX Voice Box in unison mode (one octave higher, one octave lower).

Bayu used the following EHX products in this production:
Voice Box (pianica)
Cathedral Stereo Reverb (electric guitar, electric piano, acoustic guitar)
Stereo Pulsar (electric guitar)
Russian Big Muff Pi (bass, lead synthesizer)
Double Muff (electric guitar)

Posted 3/17/2011



St. Paddy’s Day 2011

Bill Ruppert breathes in the dew of a fine morning in old Eire. With a sly wink and a nod, Bill recreates the mystery of the old Ireland using a little Elvin magic and the power of EHX pedals. 
Learn the secrets of creating lush string synthesizers and Irish tin whistles, using just a regular guitar and Electro-Harmonix effect pedals.

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 12/23/2010


Tommy (that’s her name) manages a ukulele shop in Japan. Here she performs the classic B.J. Thomas tune, “Raindrops Keep Falling on My Head” using an EHX Voice Box Vocal Harmony Machine/Vocoder.

The Voice Box can create 2 to 4-part harmonies directly from your vocals in the same key as your accompanying instrument. Its studio-quality reverb adds depth and ambience. The whistling in the last verse is from the Voice Box!

Posted 12/8/2010

Well before the advent of products like the new V256 Vocoder, Voice Box and Iron Lung, Electro-Harmonix was breaking fresh ground to bring innovative and affordable vocal processors to musicians.

This ad, for the original Electro-Harmonix VOCODER, is over 30 years old and dates all the way back to December of 1978!

Click here for the full ad

Previous Flashback Posts:

Stay tuned, more Flashback posts coming soon!

Posted 6/14/2010

Floating and inspiring, Collen Dauncey entices her Electro-Harmonix Voice Box choir to deliver inspiring, human harmonies to the Fleet Foxes “Myknonos”.  One very talented singer PLUS one musical instrument evokes an EH vocal magic that weaves a haunting and beautiful symatry.

Posted 11/16/2009

Welcome to the tenth installment of EHX Effectology. In this episode Bill demonstrates a sound that reminds him of the keyboard sound in the Led Zepplein song “No Quarter”.
Second example is more of a traditional Fender Rhodes sound with a solo using the guitar into a Voice Box whistle mode.

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 10/7/2009

Posted 6/9/2009
EHX engineer John Pisani plays the Voice Box Slytherin style, with his wizard-rock band Swish and Flick. John adds: "Harry Potter is a weakling! All Hail Draco Malfoy!"

Posted 5/17/2009
YouTuber PuffyCatTail recently ordered a Voice Box and is now looking forward to recording a new demo with it. Please send song suggestions via her YouTube page.

Posted 5/16/2009
Thanks to YouTuber JargMarbin for this bit of experimental electronic fun featuring a Serge Creature, a Korg Kaossilator, and an EHX Voice Box. Excerpt: "I am your robot father. Go to your room. You're a bad robot son."

Posted 5/7/2009
Thanks to YouTuber electricpony for this surprising Voice Box rendition of the Beach Boys' "God Only Knows" -- take that, Brian Wilson!

Posted 4/27/2009
Thanks to YouTube's GuitarGearComMx for this demo of the Voice Box -- you'll get a good overview of the many different kinds of sounds you can make with the Voice Box.

Posted 4/15/2009
Thanks to Nataly Dawn and Jack Conte for their second Voice Box video, "In Harmony." This time you'll get a closer look at the Voice Box's harmonizer features (also be sure to see their earlier video which featured the vocoder).

Posted 3/6/2009
In our previous post, we heard the Voice Box help update the sound of a classic Neil Young song. Today, straight from Japan, let's all enjoy the entirely-different and other-worldly mash of a Voice Box with an iPhone synth. Yes, people: Welcome to new world; It's been too much long... (Thanks to YouTuber perfumepod for the video!)

Posted 3/4/2009
Big thanks to Eric Myers for this amazing performance of Neil Young's "After the Goldrush." Eric used the Voice Box in vocoder mode to merge his voice with the melody, as played via electric guitar. He combined the synthed-out vocals with acoustic tracks to produce this updated "twenty-first century" version of a classic song. Don't miss the third stanza: "Well, I dreamed I saw the silver space ships flying..."

Posted 1/6/2009
Sit back, relax, and enjoy the show: the Voice Box, as demoed by Jack Conte and Nataly Dawn.

Submissions to EHX.com
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Quick Specs
Harmonically matches any electric instrument you plug into it
Professional quality pitch shifting algorithm produces realistic harmonies
The Low & High Harmony independently produces two harmony notes: 3rd and 5th
9 accessible programmable presets
Natural Glissando
Gender Bender knob allows for male/female formant modification
Built-In Mic Pre with Phantom Power & Gain Switch
Balanced XLR Line Output: Interface directly with any mixing board or A/D converter
US96DC-200BI power supply included
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