KiwiTechnics is located in Auckland, New Zealand PC Service Ltd was established in 1988 as a design and support company specialising in hardware and software. We then grew to also manufacture microprocessor based versatile LED lighting systems for use in the film industry.The name Painting with Sound was adopted when a synth repair division was started in 2006. It was during this phase that the concept of the Patch Editor was born. Combining the microprocessor and film lighting experience along with an obvious need for a replacement for the Roland PG series of controllers that are rare, expensive and in some cases poorly made, development of the PE was begun in 2008. The name Kiwitechnics was adopted for this division in 2009 as it has grown and developed a life of it’s own.The frustration of developing the PG-200 part of the PE and the obvious shortcomings of the JX-3P led to the development of the 3P Upgrade. This began as a patch of the existing code but this quickly showed it’s shortcomings and it has now become a full cpu replacement and a complete rewrite. All PG-200 support was been removed from the PE & 3P as it has caused endless support issues and it has passed it’s use-by date. It’s time to get a proper midi controller. The Kiwisix upgrade was developed due to the steady stream of dead and dying Korg Polysix’s coming through the workshop. This was mostly due to the battery that was used starting to leak and the acid damaging the cpu board. The Polysix is a popular and unique sounding synth and should be kept alive.Following the success and the ideas developed with the Kiwi-3P Upgrade a comprehensive upgrade was developed for the Roland Juno-106. This synth is another example of good hardware but with a limited user interface with poor midi implementation. Psicraft have developed a comprehensive editor that is being bundled with the upgrade.The Kiwi-8P upgrade has proved to be the most complex and challenging yet with processing split between 2 cpus and 70k+ lines of code but the result has been worth the effort we feel. The Roland JX-8P has a warm full sound and is an excellent step up from the JX-3P. We have given it more (and faster) envelopes, more LFOs, a powerful sequencer, an arpeggiator and a powerful matrix system. This has resulted in big button assignment changes so a full quality label has also been included with the upgrade.The Oberheim M1000 synth adds new features as well as fixing the midi problems and the Roland MKS-30 upgrade is a big step up for this capable synth. The JX-10/MKS-70 upgrade was released in Nov 2020 and was the most challenging upgrade yet. The result is a beautiful sounding synth.2021 will forever be remembered for all the wrong reasons but we have used the time wisely and revisited the Kiwi-3P. We have added a full matrix system and developed a wave processing module that allows wave combinations and pulse width editing of the pulse wave. We also added a small dedicated cpu just to read the PG-200 input so this is also supported.