October 12, 201015 yr comment_394891 I made a long and detailed post elsewhere. The high points are: The new model is moar better. More extended on top, better detail throughout the band, better background (or microdynamics), removable cable and nicer physical design. They need a crapload of break in - a couple hundred hours at least - and as they break in, they may actually sound worse than straight out of the box. I used a Richard Cheese album as an audio reference. I was a hopeless fanboy for the 420, so if you don't like the 420, don't listen to me. Shure SE-420 vs SE-425 (long) - Head-Fi.org Community Report
October 13, 201015 yr comment_394977 Thanks for the review. One of the IEMs that I was always curious about but never heard was the 420s. Great that they improved upon it Report
October 13, 201015 yr Author comment_395019 i personally find the idea of little balanced armatures needing hundreds of hours of roller coaster-esque mechanical break in to be highly dubious. Some stuff doesn't seem to change much at all and some stuff does. Beats me why. In this case, I had the broadly similar 420s at hand, so the relative change over time, one against the other, was obvious. I never have bought the 'getting used to it' theory. That was controled out here in any case. Report
October 13, 201015 yr comment_395026 What I find more dubious is that you used Richard Cheese for breakin ... is it really that full range? Sent from mah Droid Report
October 14, 201015 yr Author comment_395301 Naw, for break in it's gotta be latin disco. That's a must. Richard Cheese was a reference. It's all about the intellectual and emotional connection with the music, you see. Report
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