This is a devastating loss. He lived a long, full life, but to anyone in any of the overlapping worlds of audio, the recording arts, and music, he will be sorely missed.
Sear Sound was/is still an active studio in NYC, and walter was still an active engineer.
What a pioneer, genius, and by all accounts a real gentleman.
I only regret that I never got to work with him.
RIP, Walter Sear.