Groove Synthesis 3rd Wave OS 2.0a Adds Shimmer Reverb

Groove Synthesis continues to tweak and improve its instruments and have released OS 2.0a for all three 3rd Wave models, and it's a free download for existing owners.

First up there's now a Shimmer Reverb, living in effect slot 2 after Super Plate. The idea isn't new, but the implementation gives you plenty of control: Rev Time, Pitch Amount, and LP/HP Cutoff are all available as modulation matrix destinations. Groove says it sounds great without harshness or the need for EQ, and a single sustained note can be spread out and up.

The Make Waves wavetable editor also gains a third mode: Spectral. It's aimed at chorused sounds, ambient recordings, and anything with wandering pitch - feed it something strange and it will try to find the wavetable hiding inside.

Elsewhere in 2.0a there are expanded MIDI CC mappings, a new envelope retrigger option, and a batch of bug fixes. The update also completes the SysEx work needed to control and manage the 3rd Wave from outside the instrument, which paves the way for third-party tools and a companion software editor from Groove Synthesis itself. They're looking for early adopters to test it in the coming weeks.

OS 2.0a is a free download. More details in the release notes on the Groove Synthesis site.

More Info: https://groovesynthesis.com/2026/08/24/groove-synthesis-releases-os-2-0a-for-3rd-wave-synthesizers/

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