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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

$127.46

No tax for United States [change]
If chosen, this mount is fitted to the bottom of the device and has a standard female tripod thread
Stock available: 5
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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

Free shipping to UK.

For US, the import tariff is paid and your parcel will bear the PDDP logo to indicate that and should be waved through customs without delay or further charge.

For EU, VAT is collected at checkout for orders below 150 Euro and sent with an IOSS number.

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

All parcels are sent with tracking.

The seller

MIDI_IN

MIDI_IN logo

Eastville, Lincolnshire, UK
2 orders since May 3, 2026
Adventures in music, electronics and code