I'm suggesting don't touch Telex! The OP seems to have the wrong idea of ANR though. If you are 'blasted out by ATC', you have the volume too high! ANR is for reducing background noise only, you take care of radio volume yourself. It is interesting seeing how low you set the radio volume with an ANR set- usually about 40-50% as opposed to 80-90% (approximately). It does make a difference, and must be good for long term hearing protection.