I’m still in shock. He was just at Super Booth. Heaven just got another outstanding engineer and synth designer. Prayers to you and your family Dave. I’m sure you’ll have a heck of a reunion with Bob.
Rest In Peace.
I just saw this online 
The world has lost a tremendous innovator. I owe a lot to this man!
Really sad to hear this! Surprised too, as he seemed healthy & energetic in recent interviews.
Condolences to friends, family, and others who were fortunate enough to have known him.
RIP