Here are a set of video demos of the Starkey Hearing Science modular synthesizer:
Starkey Hearing Science modular synthesizer Pt 1
Here’s what poster scienceforce has to say about the system:
Starkey Hearing Science analog modular synthesizer laboratory. It is a scientific instrument, with many particular synthesis features… with this gear you can also process any external signal inputs between filters, vco’s and more… The Starkey laboratory is absolutely not common & classic instrument 😉
Starkey Hearing Science modular synthesizer Pt 2
Starkey Hearing Science modular synthesizer Pt 3
Very unique sound….amazing instrument!!
I acutally found one of these at a university surplus auction back in the late 90’s.. Paid all of $30 for it, I believe. That or $15. Anyway, it took me hours to figure out how to program it, and produce something close to music with it. I eventually put it on eBay, and was astounded that it fetched $3200… $2400 for the unit, and another $800 to ship it to a collector in Japan. I wish I still had it! 🙂