Originally Posted by
Airway
Sennheiser HMEC-25K/A
it's an ENC headset. Provides solid passive reduction for the ATR. The active noise cancellation provides a bit more but I only turn it on for longer flights as I like to save batts and it doesn't make a huge difference. The small cups are much more comfortable than any DC.
Love the HMEC-25KAS...and you get a discount and payment plan straight through Sennheiser if you're ALPA...
Have to warn you though - it was barely enough (yep - with the ANR) in the JungleJet at 10K and 320KIAS. That's a lot of wind-noise...don't know about the props...