KiwiTechnics is an Auckland, New Zealand-based company specializing in upgrade boards and CPU replacements that retrofit vintage synthesizers with modern features. The operation grew out of PC Service Ltd, a hardware and software design firm established in 1988, with synth repair work starting under the name Painting with Sound in 2006 before adopting the KiwiTechnics name in 2009. Murray Wiggins is the engineer behind the brand's designs.

The company's catalog focuses on drop-in microprocessor upgrades for classic Roland and Korg polysynths. Notable products include the Kiwi-106 for the Roland Juno-106, the Kiwi-3P Matrix for the Roland JX-3P, the Kiwi-30 for the Roland MKS-30, the Kiwi-2 for the Roland Juno-2 and MKS-50, the Kiwi-8P for the Roland JX-8P, and the KiwiSix for the Korg PolySix. The upgrades typically add expanded MIDI implementation, additional patch memory, onboard sequencers and arpeggiators, modulation matrices, and other features the original instruments lacked.

Alongside the synth boards, KiwiTechnics produces the Patch Editor, a universal hardware controller that serves as a replacement for Roland PG-series programmers and provides hands-on editing for the company's upgraded instruments. The brand has built a niche reputation among vintage synth enthusiasts and tech-minded musicians who want to extend the life and capability of analog hardware without replacing it.

KiwiTechnics has 2 products cataloged on Equipboard, including Synthesizers. Their gear is featured by 1 artist, with the strongest followings in Electronic. Notable users include Legowelt.