Been a while since I posted.
My Grado Sr125 developed grattle in one driver, and I put them in their case and in storage for a few years. I found a grattle fix on Headwize (suck & heat & clean) and decided to try it. The worst of the grattle is gone, but turning up an SR-71 amp to about 3/4 of then way brings the grattle back. My Beyers can take full volume without distorting. I was using Bink Audio Test CD 80kz "wobble" track. I also used the sine sweep and noticed that the drivers were wildly unmatched in the higher registers. It was like someone was turning the pan button. My Beyers were almost ruler-even all the way up.
Here is a weird thing: when I turn off the source the Grados are silent. When I turn off the amp, I hear a crinkle in both drivers like the mylar is deflating. Note, this is without music playing.
So why not just use the Beyers (DT250-250)? I love them but the Grados are just more musical.
I would like to get a new pair of Grados but at this price point, I don't want to end up with another expensive dud. I have my eye on the SR225. My Sr125 are I think are pushing 7 or 8 years old.
Edited by redshifter - 1/9/12 at 3:35pm