BALSAM

THANK YOU FOR THE ENTHUSIASTIC RESPONSE TO BALSAM.
All presales have been claimed. Please join our mailing list to be notified when the next batch is produced in 2026.

BALSAM is an 8-voice modal synthesizer which allows players to pitch bend and manipulate voices using an array of sliders. A reimagining of the classic polysynth, BALSAM encourages players to explore novel forms of harmonic, timbral, and rhythmic expression.

FREQUENTLY ASKED QUESTIONS

How much does BALSAM cost? +

BALSAM's retail price is $2249 USD. For customers outside North America, pricing will be set by our international distribution partner and will vary by region.

How can I get one? +

North America: . You'll receive updates when the next batch becomes available and how to get one.

International: BALSAM will be available through our distribution partners outside North America starting in late spring 2026.

When will the next batch be available? +

The next production run is scheduled for late spring 2026. Mailing list subscribers will receive advance notification before units go on sale.

What happened to the presale? +

The presale was claimed quickly. Thank you to everyone who supported this first run! Everyone who submitted a presale request will hear from me this week.

FEATURE LIST

8-VOICE VIRTUAL-ANALOG POLYPHONY (DIGITAL)
STEREO ANALOG STATE VARIABLE TONE FILTER
STEREO ANALOG VCA
LFO + MOD MATRIX + MOD ENVELOPES
SLIDERTRACKED / KEYTRACKED MODULATION SECTION
SLIDERTRACKED STEREO PANNING
GLIDE + VISCOSITY W/ INDIVIDUAL OSCILLATOR ARTICULATION
MIDI POLYPHONIC EXPRESSION OUTPUT
8-CHANNEL POLYRHYTHM SEQUENCER
USB-C MIDI IN / OUT
5-PIN MIDI IN / OUT
3.5MM ANALOG CLOCK SYNC IN / OUT
EXPRESSION PEDAL INPUT
EXTERNAL AUDIO INPUT
L/R LINE OUTS + HEADPHONE OUT
JUST AND EQUAL INTONATION MODES
BROWSER-BASED TUNING / SETTINGS / FIRMWARE UPDATER

TESTIMONIALS

"Not only does this synth provide a plethora of inspiring sounds and textures, it encourages me to explore music in new ways. BALSAM both simplifies and widens (yes it’s stereo) my sonic horizons- simple enough for anyone to stumble upon something magical and unique enough for fellow synth freaks to feel that old familiar rush. I love the core intention and idea behind it and been using it in sessions ever since I got my hands on it. 10/10"

- Magic Al

"Mid-2022, Matthew generously let me borrow a proto version of this synth he built out in Durham. Its wonderfulness will keep you up all night and inspire composition like a tuned piano in a good room does."

- Drake Ritter

ABOUT

GLX Audio workshop and office in Durham, NC

GLX is a boutique electronic instrument manufacturer based in Durham, North Carolina. The company is run by designer and musician Matthew O'Connell and a rotating cast of contributors.

FRIENDS OF GLX

MIKE NEWINS / MAKE NICE INFRASONIC AUDIO

CONTACT

MAILING LIST

STAY INFORMED

Join our mailing list to receive updates on BALSAM availability.

NEXT PRODUCTION RUN: Late Spring 2026

PRICE: $2249 MSRP

UPDATES: You'll receive notification when ordering opens