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The SynthAxe is a fretted, guitar-like MIDI controller, created by Bill Aitken, Mike Dixon, and Tony Sedivy and manufactured in England in 1985. It is a musical instrument that uses electronic synthesizers to produce sound and is controlled through the use of an arm resembling the neck of a guitar in form and in use. Its name comes from the words synthesizer and axe, a slang term meaning guitar. The system was developed as a joint venture funded by Richard Branson's Virgin Group.
The SynthAxe itself has no internal sound source; it is purely a controller and needs synthesizers to produce sound. The neck of the instrument is angled upwards from the body, and there are two independent sets of strings.
The fretboard is continuously scanned and sends signals to synthesizers which produce the sound. The left set determine the pitch played, through contact with the frets on the neck and by sensing the side-to-side bending of the string. The right set of strings are velocity sensitive; these strings can be plucked, strummed or damped in the same manner as a guitar. A keyboard made up of nine keys can also be used to trigger notes instead of the strings. Design of the key toggles was done by the late David Fowler, at the time trading under BJ Hopkins Injection and toolmaking, in Littleworth, Oxford.
When originally produced, the SynthAxe was priced at £10,000 (approximately $13,000) and eventually sold for about £6,000.00. The instrument was built from aerospace and military grade hardware, and was such a sophisticated and expensive piece of machinery that few were sold, making it difficult to keep the company afloat. In or around 1986, Virgin Games took over the distribution but let it go after a couple of years.
Fewer than 100 SynthAxes were made, and it is difficult to locate used units. Most musicians who desire a MIDI guitar controller often use other alternatives, such as Roland or Axon systems that can convert a guitar's output to MIDI via 13-pin cables and outboard devices or older systems such as the Roland GR-500.
Prominent players are Allan Holdsworth who used the SynthAxe extensively on his albums Atavachron, Sand and Flat Tire, Chuck Hammer who worked with both Lou Reed and David Bowie, and Lee Ritenour, who used the SynthAxe on his album Earth Run, the cover of which features the instrument. Christopher Currell used it to control the Synclavier on Michael Jackson's Bad tour.Future Man also uses a highly customised version of the SynthAxe.