Frostmod’s Riffosc Brings Dual Supersaw Power to microKORG2

Frostmod Audio released Riffosc on January 7, 2026, a free pay-what-you-want Logue SDK oscillator that plugs into the microKORG2’s OSC slot and adds two supersaw-style oscillators per voice. The plugin supports up to eight-voice polyphony and stacks seven saw oscillators per voice, giving the compact synth a much thicker unison and pad capability than its stock waveforms.

Riffosc delivers a familiar supersaw texture but with practical controls for microKORG2 patch makers. Frostmod describes the plugin as an OSC slot plugin that “supports up to 8 voice polyphony, and has 2 individually tunable supersaw oscillators consisting of 7 individual saw oscillators per voice.” That architecture means you get two independently tunable supersaw sources inside each voice, useful for layering detuned stacks, creating wide stereo motion, or crafting dense leads and pads without external processing.

Modulation is focused and straightforward. The plugin exposes three modulation targets: oscillators 1 and 2 pitch, and the oscillator mix. Those targets let you route existing LFOs, envelopes, or performance controls on the microKORG2 to introduce pitch modulation or dynamically blend the two supersaw layers. For players who rely on hands-on tweaks and real-time expression, having mix and pitch modulation at the OSC slot level makes performance patches more playable.

Practically, Riffosc extends what owners can do with their microKORG2 without needing a hardware upgrade or a big investment. The pay-what-you-want model lowers the barrier to experimentation, so users can test how supersaw stacks sit in their rigs and decide what’s worth keeping. Sound designers who like to sculpt thick ambient textures or trance-style leads will find immediate value, and live performers can use the extra density to fill a mix when they don’t have access to backing synths.

Installation is straightforward in concept since Riffosc is built for the microKORG2’s OSC slot, but verify your microKORG2 is updated and able to load Logue SDK OSC plugins before installing. Riffosc’s design keeps CPU demands predictable by capping polyphony at eight voices, matching common microKORG2 use cases for pads and leads without surprising voice-stealing behavior.

The takeaway? Riffosc is a low-friction way to cure a bit of GAS for thicker, supersaw-driven tones on a beloved compact synth. Our two cents? Download it, patch it into a pad or lead, and play with the pitch modulation targets—those small tweaks will show you whether Riffosc becomes a permanent patch cable in your toolkit.