TMA-1 is like the opposite of Grado headphone (S80). Both are very very good. Grado is super bright, tma-1 is a bit dark. Grado is easier to be driven and shine with portable audio player (galaxy s2, ipad etc) but I almost heart broken when I test tma-1 with Galaxy SII. However, TMA-1 is a very capable phone. Once I hook it with my X-Fi platinum, I was pleasantly surprise. At 20% of the sound card volume, I almost reach my hearing limit. And once I fiddle with EQ, I was WOW!. The bass is punchy, solid and vibrate my skull with fast and sharp decay. I like it. I hate phone that has strong bass till it overwhelm half of the sonic spectrum. TMA-1 is different. The bass is strong but it never polluted middle and high frequency component. Same goes with high freq zone. When I increase treble, it will not cause middle freq to shift. What I love most about TMA-1 is it is very flexible. If I want more bass, I crank it up at my x-fi card and I got more bass without any distortion at other area and vice versa. Same goes with treble. Therefore, I could use this phone with any genre and it is a bless for trance/electronic music lover. Seriously LOL. For rock/alternative lover (I am listening to Greenday at this moment), the guitar sound is awesome.

Comfortable wise, it is much better than Grado (thank God). But my other cheapo can such as Philips SHP2700 is much more comfortable. But since it is not fully covers my ears, less sweat issue here. The headband need padding. Different head size and shape will has different experience anyway.

TMA-1 is an excellent headphone. Worth every single RM spent. But it is not a perfect headphone for everyone (provided everyone has the money to acquire it). It need great soundcard or good headphone amp to really shine. Portable music player such as Galaxy SII, Express Music 5800XM, Ipad II etc can't do justice to it. Granted it is way better than the factory supplied earphone but cheaper headphone or earphone could sound better on this portable audio device (my personal experience, Grado S80 and Senheisser Precision II).

In short, is this a keeper? ...... HELL YEAH!!!

I am not an audiophile. Just another Joe who love to listen to contemporary and trance music. This is just my personal opinion and experience feedback. Please note that the opinion above is based on the TMA-1 that has less than 10 hours burn in (I never burn in my phone actually...I just listen to it normally), while Grado, Precision and other headphone has hundreds of hours burn in.

Additional Note:
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1. Current batch need burn in. The difference of sound quality between 1 hour of usage and 30 hour of usage is pretty significant. Hence, explaining my 'almost heart broken story' since I test this can on my phone once I acquire it at KFC Bukit Bintang.
2. TMA-1 is pretty darky (audio wise) headphone. Perfect for Trance, Techno, Club House, Dance, RnB music with decent amp or high quality soundcard. But, for other genre, it need EQ manipulation or amp that has bass/treble boost. For Pop song, I have to crank up my treble to +60% and use Noise Sharpening (set at 70%) at Foobar 2000 = Solid bass, smooth mid, bright high. On iPad, I have to download EQu and on Galaxy I have to download PowerAmp. But I still think I need FiiO E6 though. Although the phone attenuates high frequency by design , it has no difficulties to reproduce it if needed. But if you love bright sound and don't care much about solid well rounded punchy bass, I think TMA-1 may not suitable for you (classic, orchestra, jazz lover i guess).