Have to say, I never found the tutor noisy at all (and my hearing hasn't suffered despite several hundreds of hours in the thing!). Though I haven't heard anything of this latest rumour. Just for the record the helmets in use on it are the Mk4, Mk10 & the "alpha" helmet (the white quick-adjusty one) but only spaceys/pax use the alpha. No ANR boxes are fitted to any of the helmets or intercom system.