They keep Grado sound, while have less bass than iGrado, which are quite bassy. Bass quantity increases with clasping force, while the comfort suffers. You may bend the clips to meet your personal prefs. Overall SQ is slightly worse than with iGrado. I beleive that absence of backside acoustic dampening is the reason (no cups, no foams). Anyway, they are a bit better than my extremely modded KSC-75 (drilled grill, OFC cable, punched iGrado foams which tame harsh highs).
Drivers are iGrados, which are the same as SR60.
Grips are noticeably heavier than KSC-75, thus less comfortable. They sound a bit better than well-modded KSC-75, though not better enough to justify the modding hassles. Probably SR225 drivers deserve this mod more
Or GS1000 Kinda tutorial:
Clips are not sticked, I use a Koss-like clutches instead. I can not tell you how to make them, since all my attempts to make them myself were unsuccessful. I ended ordering them to my friend who lathed them for me. Then I glued them to the drivers.
The rest of the mod is obvious, except a liitle trick which improved the comfort dramatically. I straighten the 90 degrees clips bend covered by the silicon, next to small steel ball. Then I bend it again at other point to provide more room for my ears between the clips and the drivers. I also recommend these "rebending" for any who feels themselves uncomfortable with KSC-75 as I did before. This helps.