Thank you all very much for your replies.   I feared that the noise cancelling might be problematic. To be honest, the most important thing is that it performs well under quiet circumstances and for that you have certainly given some leads for further investigation.   With regards to the...

Hello all,   I am looking to get my dad some top of the range headphones, where price is not an issue. He is a real audiophile with sensitive ears, but needs to get something for when he is not at home.   He would use them exclusively for opera and classical music (for example: Verdi...