via this auction
This is the first post to feature both Lyre inc. and the FDSS Studio Additive Synthesizer. It was spotted and sent in via M Me. The listing, images, and info is from Synthmaster.de, posted here with permission.
Details from the listing:


The FDSS is an additive synthesizer with analysis and resynthesis function from 1987
The technical data is on the last picture in the web, you can find almost nothing about it
Ultra rare , as far as I know less than 50 devices have been built , only three have been delivered to Europe .
This synthesizer was available as an 8 or 16 voice version,
The 8-voice version was always the basic version, which could be expanded to include a further 8 voices out of 16.
Like the famous Technos Acxel synthesizer, the Lyre
FDSS synthesizer also designed and built in Quebec / Canada.
You had to operate it via a terminal, similar to the
Synclavier, Synergy or Kurzweil K150FS.
Software was and is included for PC and Apple Mac
Mac could be connected directly and with the PC you needed a card (ISA is included)
price, no idea.....
with such rare things "whatever someone is willing to pay" applies :-))
or exchange for vintage synthesizer?"