i would Flog your old pair and get a new ANR headset.
They really do make a differences. I think the problem is that the extra electronics you need to fit into the cup removes some of the padding which means even more noise when the bat goes. Which it always does just as you start the approach and have no chance to change it.
And if you don't mind could I highjack the thread with a question.
The rechargable bat are all 8.3 or something volts which seems to be slightly to low for the DC ANR. There is a noticable difference between running on duracels and rechargable.
Is there anyway round this?
BTW I have nothing to do with this company apart from as a customer but i have found them pretty quick for delivering and no hassels
http://www.battery-force.co.uk/show_...Batteries.html