Connecting a Theremini to a PC for recording

Posted: 8/28/2025 11:16:57 AM
GordonM

Joined: 8/28/2025

Good Morning,

I bought my wife a MOOG Theremini for her birthday and she would now like to record some of her compositions.

I have it plugged into my laptop with the provided USB cable but it seems that the sound doesn't go that way.

PLEASE IN SIMPLE TEARMS, what do I need now to get her recording.

I do use Audacity and Magix Musicmaker if that helps

Regards, Gord 

Posted: 8/28/2025 12:54:36 PM
dewster

From: Northern NJ, USA

Joined: 2/17/2012

Maybe connect the audio out of the Theremini to the audio in of your laptop?

Posted: 9/4/2025 1:18:42 PM
swarz

Joined: 9/4/2025

You will probably need an audio interface and some 1/4" audio cables to use the audio output of the theremini. I just stumbled across this because I'm looking into buying one, so I don't have one yet and can't confirm this, but that's what it looks like the audio outputs are (left and right 1/4" audio jacks). 

As for audio interfaces, have fun figuring out what fits your budget and meets your needs. Since it looks like the theremin is capable of producing two channels for recording in stereo, you probably want to get one that at least has two line inputs (so something like a focusrite 2i2). 

The USB is mainly for tinkering with the MIDI controller functionality of the theremini. Which seems like an intriguing feature, but from what you're asking is a significantly more in depth jump than what you are wanting to do right now.

Posted: 9/4/2025 2:18:39 PM
RoyP

From: Scotland

Joined: 9/27/2012

As swarz notes, an interface between the theremini and laptop.

Something like this MicroMix: input from your theremini via 1/4" jack plug adapter (theremini:stereo -->MicroMix:mono) then USB from MicroMix to laptop USB so you can record into Audacity etc.

Obviously other versions of this MicroMix-thing are out there and will give you different Input/Output possibilities but this is in essence what is needed.

https://www.thomann.co.uk/the_t.mix_micromix_1_usb.htm

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