Groove Synthesis is a California-based synthesizer company founded by Bob Coover and Andrew Silverman, industry veterans whose backgrounds include work at Sequential and Avid/Digidesign. Based in Orinda, the company designs and builds hardware instruments in the United States, with Coover having previously contributed to synths such as the Prophet-12 and OB-6 during his tenure with Dave Smith.

The company's flagship product is the 3rd Wave, an advanced wavetable synthesizer inspired by the PPG Wave and the wavetable era of the early 1980s. It pairs three high-resolution digital oscillators per voice with a dual-filter analog signal path — a Dave Rossum-designed 2140 low-pass filter alongside a state-variable filter — and offers 24-voice polyphony with 4-part multitimbral operation. A built-in Wavemaker allows users to create up to 64 custom wavetables, including sample-to-wavetable conversion from external audio. The 3rd Wave is offered as a 61-key keyboard and as a desktop module, and the range was later expanded with the 3rd Wave 8M, a compact 8-voice desktop/rackmount version that is bi-timbral and fully patch-compatible with the larger instrument.

The brand occupies a niche aimed at players and studios seeking a modern take on digital/analog hybrid wavetable synthesis, and its instruments have drawn coverage in publications like Sound on Sound, MusicRadar, and Tape Op.

Groove Synthesis has 4 products cataloged on Equipboard, including Synthesizers. Their gear is featured by 7 artists, with the strongest followings in Electronic, Pop, and Funk / Soul. Notable users include Oneohtrix Point Never, The Weeknd, and Tate McRae.