Retroaktiv is a US-based company founded by Rob Currier that specializes in hardware programmers and control surfaces for vintage synthesizers. The product line focuses primarily on classic Roland and Korg instruments that originally relied on menu-driven parameter editing or limited onboard controls. By providing dedicated knobs, faders, and displays, Retroaktiv's programmers restore hands-on sound design to these iconic machines.

The core lineup includes the MPG-8 and MPG-8X programmers for Roland JX-8P, Super JX, MKS-70, and MKS-80 synthesizers; the MPG-70 and MPG-7X for the MKS-70 and Super JX; the MPG-50 for the Roland Alpha Juno and MKS-50; the MPG-7 for the MKS-7 and Juno-106; the DW-8P for Korg DW-8000, DW-6000, and EX-8000 synths; and the PG-2K for Kiwi-modified JX-3P and MKS-30 units. Many models feature OLED displays with envelope visualization, intelligent patch generators that create usable sounds across categories like pads, basses, and strings, memory expansion options, and poly-chain modes that allow multiple synth units to be controlled as one instrument. Retroaktiv also produces the RETRAKT adjustable angled rack-mounting system and a small range of Eurorack modules including the HLFO utility modulation source and the SSH variable-slope sample-and-hold. All units are built in heavy-duty powder-coated metal enclosures designed for desktop or rack use.

Retroaktiv has 3 products cataloged on Equipboard, including Tabletop Synthesizers.