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Open Theremin

Open Theremin

$195.25 Price Tier: Budget

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Page last updated Jan 16, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated January 14, 2026.

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Reviews

Price

Etsy

$195.25

Average Price: $195

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Open Theremin is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

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Description

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Step into the world of electronic music with the Open Theremin, a modern twist on the iconic instrument first brought to life by Leon Theremin in the 1920s. This isn't just a nostalgic nod to the past; it's a fully-fledged, playable instrument that invites both beginners and seasoned musicians to explore its unique soundscape. The Open Theremin boasts an integrated Arduino micro-controller, allowing for seamless auto-calibration and wave form adjustments without any need for soldering or technical assembly.

Embrace the art of hands-free performance using two antennas: one for pitch and another for volume control. The design is rooted in classic theremin principles, using heterodyne oscillators to create its distinct sound. With its user-friendly interface, this version 4.5 model offers eight preprogrammed audio wave forms and three registers, all adjustable via four intuitive knobs.

Perfect for the tech-savvy musician, the Open Theremin is entirely open source, allowing you to experiment with custom waveforms and connect with other devices through its two control voltage outputs. Its thoughtful design includes a USB-C connection for power, ensuring that you can easily integrate it into any setup, whether at home or on stage.

Key Features:

Integrated Arduino micro-controller, pre-programmed and ready to play
Pitch and volume antennas with excellent linearity and digital auto-tuning
Eight preprogrammed wave forms and three registers
USB-C powered with easy access side-mounted connectors
Two control voltage outputs for external device integration
Open source hardware and software for customization
Includes electronic board, antennas, mounting accessories, and build instructions
Lightweight, portable, and designed for intuitive play without a computer

Videos

Biyi Amez

Open Theremin V3... Ave María F. Shubert... traning

Video thumbnail for Open Theremin V3... Ave María F. Shubert... traning by Biyi Amez

Open Theremin V3... Ave María F. Shubert... traning

Biyi Amez

Video thumbnail for Finally, an open-source theremin! (Demo and circuit analysis of the OpenTheremin) by Tanner Tech

Finally, an open-source theremin! (Demo and circuit analysis of the OpenTheremin)

Tanner Tech

Video thumbnail for Making the Open Theremin From Scratch by Locke Lab

Making the Open Theremin From Scratch

Locke Lab

Video thumbnail for Open Theremin - Build and first play 4.0 / 4.5 by Dean Coyle

Open Theremin - Build and first play 4.0 / 4.5

Dean Coyle

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Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Alternative Dance

Alternative Hip Hop

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