Owner of 325is serial 4386 here, living in Sweden. I use my 325is with Centrance DacPort but with great sound also from my old NAD amp. Like most owners I love these for the sound and I never even think of upgrading (unlike the DacPort which i like a lot but maybe find a bit clinical sometimes).
Unfortunately one of the drivers seem to have cracked. I'm surprised that this was even possible because I don't play terribly loud, but it has. I wrote to Grado and got a very helpful reply and recommendation for a firm in Sweden, called EM-Nordic. Now, a couple of questions: 1) when i replace one driver, should I also replace the other one? I.e. how matched do they have to be? 2) will they sound the same after replacement? 3) does it matter who does the job and does anyone have other names in Europe for Grado service? 4) should I upgrade the cable at the same time - many of you seem to have done that with great results. If I want them to be just a little darker and settled, without losing their trademark punch and liveliness, what cable would you recommend?
Many questions but this being the department of Grado studies I think I should take the opportunity!