My TMA-1s arrived today, so I will post a full review soon, but in the meantime some quick impressions. As to the foam pads, I agree with with radio-head and toughnuts assumptions. The foam pads are useless in my opinion, isolation and leakage are affected, but worse the sound becomes, thin, tinny and distant, and requires hand pressure on the cups for anything approaching decent sound; forget the foam pads. With the pleather pads the TMA-1 sounds a bit Grado like, forward, mid centric with limited sound stage.
Very early stages yet, but the sound is quite good, fairly balanced with the ability to produce decent bass when needed, but not a typical bass focussed DJ headphone. Perhaps missing some upper end nuances, it seems a little rolled off in the highs, but I need to spend some listening time to give a more precise view. Detail seems reasonable, without matching the ESW9 and other top end portables. Instrument separation could be better (they are forward and have a small soundstage), resulting in the aiaiai struggling a little with complex music, being a bit muddy when there is a lot happening at once. Initial impression is that of a closed Grado, with slightly more of a bass focus at the expense of the high end spectrum. The mid focus does remind me a bit of the HD25, but I have spent little quality time with the DJ/portable Senn and I am relying on memory, to comment with any great accuracy.
Build quality of the TMA-1 seems solid. I think the supra-aural design will result in many suffering from the usual ear comfort issues after wearing them for reasonably long periods (plus 2 hours), despite the fact that these do not clamp that hard and they are quite light. The headband offers virtually no padding at all and may cause some discomfort again [size=9pt]regardless of [/size] their weight. The coiled cable is a pain in the butt, causing weight issue inbalances due to the single sided entry (it has to go in my opinion and I have a replacement from Monster on the way).
Size wise they are about the same size as a HD25, the cups are fairly deep, they do fit around the neck when not on the head, but they do not fold up at all for transporting.