MATRIXSYNTH: Exploring The Genki Instruments Katla A $6K Volcanic Synth With Venus Theory

Friday, August 07, 2026

Exploring The Genki Instruments Katla A $6K Volcanic Synth With Venus Theory


video upload by sonicstate

"@VenusTheory is one of the lucky people to have their hands on the @genkiinstruments Genki Instruments Katla, the Icelandic volcanic synthesizer priced around $6,000 (yes you did read that right).

As well as parts hewn out of the Icelandic Katla volcano, hence the name - it has five voices with a paraphonic architecture, individual level, waveform and octave controls for each oscillator.

The resonant filter has low pass and band pass modes, self-oscillation and a wave folder. Modulation has some unusual routings, with a 'volcano' (of course) LFO shape and a Skrida control that randomizes envelopes and levels per note.

As well as user presets it has a system which recalls patches per section, effects include reverb, analog drive and tape-style detuning, and recent firmware adds MPE.

We explore it together - and if you want to get a sense of what it can do - we have a set of Custom Decent Samples from Venus Theory for our own Decent Sampler UI available for YouTube Members and Patreon Supporters

And Venus Theory has his own Tephra instrument available here: https://venustheory.gumroad.com/l/vtt..."

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