That is interesting, before I picked up the German Maestro's as my closed can I asked HiFiGuy528 about a neutral pair of closed. He has the MB Quart version which was German Maestro's previous company, also his major recommendation was the AKG 550's. He likes them so much he has two pairs, I have not heard them but would like to one of these days. Are they to neutral for your liking?
I actually think they sound good... good bass extension and mids... the treble is never biting or bright, it just seems like it is missing something. Decent imaging, sound stage and no bass bleed (these are not bass head cans by any means lol) I did have to modify the ear pads and bend the headband to get a good seal... without doing that they were not usable and sounded awful. If I can make these fit a little better (why couldn't AKG use the k/q7xx headbands?) I'll keep them.