Headsets again! There must be as many posts on headsets as there are on aircraft accidents. For heaven's sake, try doing a search before you post on headsets yet again.
All I know is that unless both pilots are using the same headset, noise reduction headsets are a pain in the ear. All I can hear from the supplied headset is the hiss of static and the heavy breathing of my colleague. If you want to use one, buy two and offer your fellow pilot the use of the other headset.
Waste of money and useless in most cases.