I have an Ouverture that connects to my Senn model no HD212 PRO
http://www.techstore.co.uk/browse.php?a=p&prodLineID=111327
fony only 30 quid, they work superbly well with the Ouverture, I have tried over 20 other different cans with my Ouverture in the past, including all the expensive Senn models, both the B&O Form 1 and 2, most of the Bose, Sony and Grado cans, I can honestly say the HD212 are the best value for money and just provide a good sound with the Ouverture for not a lot of money. The bass on these are so impressive, so if he likes classical music, or listening to FM Stereo radio, then he will not be disappointed.