Gotcha ... So young ears are "flat" so to speak to music, but what about diminished hearing? That starts around 30 years old. Shouldn't we shelve and boost the hell out of the upper frequencies? I have a hearing screening test next week. Both the examiner and hearing aid rep (both audiophiles) will be there to help with my stereo related concerns. From conversations they both realize I am looking to do active compensation. Zene