Anybody ? It's only day 1 ! .....Must be a Yorkshireman .
Had Peltors on ATPs s , something serious changed in them and the whole lot were replaced .
Old one flogged cheap . Managed to get a pair , But they had to be modded for light a/c ... luckily a mate did the bizz . The mic. was the prob ...something carbon Vs. dynamic ? for light a/c and the opposite for big stuff . Worked well for years , mate had even put a small sw. on to change over the mic. type .
Can't help with techie speak , just a Tractor driver with wings , and an amateur fitter at best .
The Trident Astrolites talked about in previous post , just had Nato plug replaced by twin plug and work ok in Cherrytees , Cessnas etc.
rgds condor .