via this auction
"Up for auction is one incredibly rare Roland system 700 block 6 modular synth piece. Block 6 is the Interface Frequency-to-Voltage converter plus Envelope Follower plus Schmidt Trigger and is augmented by a sixth VCA, a versatile MultiMode Filter, and a 9-input Audio mixer. This unit is NOS new old stock and has never been used in fact the case it comes in has only been opened twice in the last thirty two years. Once in 1980 when purchased and now.
As you can see by the photos it is in truly in perfect condition not a scratch or blemish to be found. I've bought and sold many vintage analog synths over the years but I have never come across a system 700 and to find a piece that has never been used is incredible. The materials parts and craftsmanship are outstanding it's easy to see why Roland in the late 70s early 80s were second to none. The only issue I can see is since it is a modular piece I have no way of testing its operation. But as stated with the fact that it has never been used and the quality of Roland back then I dought there would be a problem This is a museum piece the scarcity of which I'm really not even quite sure of it is rumored that roland only sold apox fifty full systems and for that reason is hard to place a value on. The last full system sold close to 40 thousand dollars. Please email with any questions System 700 Facts Made from 1976-1982 Full system weighs over 350lbs in case Originally cost over 16000 dollars Full system has 9 oscillators"
