Katla synthesizer

Voice Rotating
Polyphonic Synthesizer

Order

Crafted for Musicians,
Inspired by Nature

Katla is a Voice Rotating Polyphonic Synthesizer inspired by it's namesake – Iceland's largest subglacial volcano. We set out to build an instrument worthy of that legacy, something powerful and expressive.

Katla excels at generating rich, evolving, multi-layered textures, where each note stirs, swells, and erupts in its own distinct way. Its design embodies a balance between randomness and control, inviting experimentation and rewarding curiosity.

Katla Parameters

Katla
Parameters

A set of wildcard parameters designed to infuse the synthesizer with unpredictable, organic behavior, adding life and movement to your sound.

Katla Parameters demonstration
Round Robin

Voice Rotation

At the core of Katla is a multimodal voice-allocation engine that routes notes across five discrete voices, each with individually adjustable parameters.

Voice Rotation demonstration
Distortion

Multiple
Distortion Engines

A volcanic synth must roar, so we equipped Katla with four independent distortion destinations, the most unruly of which is a stereo CMOS drive.

Distortion Engines demonstration
Lava

Forged from
Icelandic Lava

Katla is framed by side panels and knobs crafted from authentic Icelandic lava, giving each instrument a tangible connection to the volcanic forces that inspired it.

Icelandic Lava demonstration

Sound Examples

Features

Five Independent Voices

5 voice polyphony, with individual filters, amplifiers, LFO's and envelopes for each voice.

Five Independent Voices

Sub per-voice

Each voice is paired with its own dedicated sub-oscillator with global controls for waveform and octave.

Sub per-voice

True Stereo

Notes can be spread across the stereo field, shaped by dedicated left and right distortion channels, and immersed in a spacious stereo reverb.

True Stereo

Clock Sync

Katla can be synced to the BPM of your DAW or any external clocking device, allowing its modulation to lock tightly with your music.

Clock Sync

Keyboard Tracking

Keyboard Tracking adapts envelopes, LFO timing, and filter cutoff to the pitch of each note, making every key respond with its own unique character.

Keyboard Tracking

Looping Envelopes

Katla's looping envelopes blur the line between envelopes and LFOs, allowing you to craft rhythmic, evolving patterns.

Looping Envelopes

LFO per-voice

LFO's offer unique combinations of their minimum and maximum outputs which are used to modulate the stereo effects.

LFO per-voice

80's Digital Plate Reverb

Lush stereo digital reverb inspired by classic 1980s hardware, designed to add depth and ambiance to your sound.

80's Digital Plate Reverb

4 Distortion Stages

Katla's Four Distortion Destinations let you shape tone at multiple stages, each adding unique color and texture.

4 Distortion Stages

Row Presets

Preset buttons are divided into three rows, with each row controlling presets for specific sections, such as oscillators or LFOs.

Row Presets

MPE compatible

Katla is fully MPE-enabled, with per-note response to pressure, pitch, timbre, and aftertouch.

MPE compatible

External Inputs

Katla features five external inputs, each routed to its corresponding voice.

External Inputs

Unison Grace Period

When Unison Grace Period is enabled, a slight timing offset is introduced, allowing Katla to let all notes fade out smoothly.

Unison Grace Period

Hand-Assembled

Each Katla is meticulously hand-assembled, making every unit a rare, finely crafted piece of musical artistry.

Hand-Assembled
Background

"Katla has this unpredictable quality that turns even simple ideas into evolving sonic worlds."

Max Cooper, Electronic Producer

Four Distortions,
All at Once

Phase Distortion

Phase distortion reshapes a waveform's phase angle to create rich harmonics. In Katla, it adds evolving tonal variations, producing textures from subtle to aggressive.

Phase Distortion

Wavefolder

Wavefolders are a cornerstone of West Coast synthesis. When a pure waveform, like a sine, is fed into a wavefolder, it generates rich harmonics by inverting the wave's direction and creating complex timbres.

Wavefolder

Stereo CMOS Distortion

Katla features a stereo analog drive that ranges from subtle coloration to wild, aggressive distortion.

Stereo CMOS Distortion

Signal Overdrive

Global Level knobs add subtle analog warmth and harmonic richness when turned beyond their midpoint, gently saturating the signal.

Signal Overdrive
Analog circuitry

Analog Signal Path

Katla blends digital oscillators with an analog signal path—filter, wavefolder, distortion and amplifiers—delivering precise tone generation infused with the warmth, grit, and dynamic character of true analog processing.

Katla's modulation engine runs on a high-performance ARM processor, combining speed, efficiency, and stability to drive the oscillators, modulation and reverb with responsive, reliable control.

Background

Alive, imperfect, and utterly distinct

Katla Parameters

Móða

A way to add tuning instability. It simulates an old synthesizer drifting out tune, giving a vintage character.

Móða

Kvika

Slow pitch fluctuations, reminiscent of the wow factor on analog tape devices.

Kvika

Skjálfti

Fast pitch modulation per voice, evoking the flutter characteristics of tape.

Skjálfti

Glóð

Occasional pitch modulation events applied independently to each voice, reminiscent of momentarily slowing a tape by pressing on the reel.

Glóð

Aska

Modulation events applied to the amplification and frequency spectrum of each voice independently.

Aska

Skriða

Randomises the attack, decay and release times of each voice.

Skriða

Rökkur

Spreads notes across the stereo field

Rökkur

Rústir

Rústir is Katla's wavefolder, which generates harmonics by folding the signal back on itself.

Rústir

Testimonials

Atli Örvarsson

Atli Örvarsson, Composer

(Silo, Defending Jacob)

"With Katla, I feel a deep connection to sound. Its polyphonic expression and unpredictable timbres turn every sequence into a living composition, full of subtle motion and emotional depth"

Walter Mair

Walter Mair, Composer

(Liaison, COD: MWIII, F1: Drive to Survive)

"Katla transforms my ideas instantly. Each voice reacts independently, creating textures that evolve organically. It's not just a synthesizer—it's an instrument that listens and responds to every nuance I play."

Herdís Stefánsdóttir

Herdís Stefánsdóttir, Composer

(Knock at the Cabin, Trap, Verbúðin)

"The expressiveness of Katla is extraordinary. Its dynamic modulation breathe life into every note, giving me sounds that are both complex and intimately playable."

Katla synthesizer

4,990 EUR
Including VAT • Free shipping
Limited batch

Order

Technical Specifications

Technical specifications