After getting only a "discontinued" response from Klipsch, and no response from reaching out to Klipsch employees, I have to ask: Why did Klipsch abandon this very expensive product, and why is there zero aftermarket support?
I already know, from my own experience and the wonderful world of web opinions that:
They are not very comfortable
The noise cancelling really depends more on isolation (that tight clamping) and noise masking, and was never as effective as the competition
The headbands and ear cushions are not very sturdy (my ear cushions split despite careful handling)
All that being said, Klipsch could at least have provisioned enough headbands and cushions to help us out. Klipsch is famous-rightly so- for supporting decades old speakers, so why not a product that was marketed as a"flagship" entry?