http://www.head-fi.org/t/654161/review-comparison-ath-ad900x-vs-ath-ad1000x-vs-mdr-ma900-its-still-over-900 You might want to fix the MA900/AD900X review link... though I did enjoy reading your earphone review. Anyway, I got a MA900 to play with at the moment. One thing I want to ask to people who own the MA900, is it just me or are these headphones much harder to drive than their specs would imply? The MA900 seems significantly quieter than my other headphones (closed HD669, semi-open MDR-XD200, open ATH-AD900) at the same player volume level. I had expected them to be the other way around given its high sensitivity and ludicrously low impedance. Is this normal or is there something wrong with the one I have?