I don't think it is. I asked the buyer and he says he wears his glasses
above the seals.

"Foster" wrote in message
...
I used to have a squeal problem with my DCs. Since I wear glasses, it was
suggested that the seal is compromised and feedback can occur. It's been a
long while since I've flown so I don't recall if that was in fact the
problem.

Juan Jimenez wrote:
Somebody explain to me why ANR headsets squeal when you are descending
from FL180 and lower in an unpressurized aircraft. Flightcom is modifying
their Denalis to deal with this but they say all ANR's do this.

????

Juan