Yeah, I did the cap mod on mine, quite some time ago. Probably been a year or so. I thought it improved the dynamics, bass and clarity. Pretty much across the board. Night and day? eh perhaps not, but definitely noticeable. And a very cheap and easy mod. I enjoyed it before, and I enjoy it more now. I used a different, recomended cap, for the smaller front one, but silmic's for the larger caps. Can't remember what cap I used up front, but it was the newer recommendation at the time.... think it was a MUSE FG cap. Muse and Silmic's are "expensive" caps when your making thousands of units. Im sure the designer did the best he could with the budget constraints. These replacement caps are simply, technically "better". They have better ESR characteristics, and measure better. How much of that translates to sonic quality is up for debate. But the mod is very "cheap" and pretty easy... 5$ "More" per unit, for caps that are esoteric, can add up to tens or hundreds of thousands of $$$ in manufacturing cost when multiplied by tens of thousands of units.