The Vako Orchestron was a failure and it seems that
only 50 or so were actually made. I seem to recall that there was
quite a buzz about the Orchestron at the time but as far as I can
remember, the only known artist to actually use one (or at least,
admit to using one!) was Moraz.
No doubt many prog-rock keyboardists of the time tried one out
as a possible replacement for their Mellotrons but it was probably
a combination of poor sound quality, reliability issues and high
price ($5,000) that put people off investing in an almost unknown
instrument from an equally unknown company.
It is said that Florian Schneider of Teutonic synth meisters, Kraftwerk,
purchased an Orchestron in the USA during the 'Autobahn' tour and
this was subsequently used on 'Radio-Activity' and 'Trans-Europe
The Orchestron patches in Nostalgia can only give a taste of the
original but no attempt has been made to disguise their 'scratchy'
nature and they are rather nice sounds in a lo-fi kind of way.
If you want a more complete, higher-quality set of Orchestron samples,
you might like to check out the CD-ROM that's for sale over at optigan.com!
This provides all the original samples from the Optigan, the Chilton
TalentMaker (a related product) and the Orchestron in Akai format.