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The e-theremin with MIDI and audio out plus quantisation, on-screen display of settings and current / target note
MIDI
Synth

e-ther 'Advance' : e-theremin with MIDI / audio

Sold by MIDI_IN

$128.33

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Original Design
This product was designed by MIDI_IN. By buying this product you support original hardware creators.

What is it?

This is played with gestures in the air like a theremin and can output:

  • MIDI over USB (now a USB-C socket)
  • MIDI over TRS (a TRS/5-pin DIN lead (type A/Korg) gives MIDI over 5-pin DIN)
  • audio (Now built-in and not an optional extra)

The 'Advance' model has

  • screen and menu system on-device
  • quantisation
  • on-screen display of nearest / target note

(see separate listing for e-ther 'Classic' without these extra features)

Why did you make it?

I would love a real Theremin and the idea of something pocket-sized and super versatile appealed to me. I thought this might be possible with distance sensors and yes - it works really well!

What makes it special?

e-ther's sensors don't use visible light and therefore aren't affected by changes in ambient light. They measure distance very accurately (invisible, eye-safe) making e-ther very predictable and consistent.

The MIDI output means that you can use it in a variety of scenarios - with electronic instruments or DAW. There is some configurability of the vertical control which can send expression or modwheel messages.

A demo of the new 'Advance' model is on the Youtube channel

A manual at https://peacockmedia.software/e-ther/e-theradvancemanual.pdf has more details.

Links to code and documentation

Documentation (peacockmedia.software)

Product HS Code: 92079080

Shipping policy

I usually ship 6 days a week and usually next-day

The seller

MIDI_IN

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Eastville, Lincolnshire, UK
1 order since May 3, 2026
Adventures in music, electronics and code