From what I have read, it's only two songs from E.C's Unplugged that Grado uses, Before you Accuse Me , and, I forget what the other one is.
From some pictrues that I have seen, they also use vintage Marantz gear, to test their headphones. I can't say I blame them, my Marantz 2220B is one sweet sounding reciever.
And here I thought I had too many headphones, but looking at your sig, I realise that I don't have enough!.
Now that I know that you have 40+ pairs of headphones, I have a mental pictrue of you, stepping over headphones to get to the pair you want to listen to
What can I say, I'm a Grado fan. If we ever meet, remind me to show you my Grado tatoo...and no, I won't have to turn around and drop my pants for you to see it...that would be my Sennheiser tatoo
Seriously though, I made a promise to myself, that if I end up buying a pair of PS1000e, I'll sell my PS1000, and my beloved GS1000, but then...I also said that I'd give my SR80i to my god daughter, when I bought my SR80e, and they're still here so...
A few nights ago, I was playing with my latest toy, my BSG, C-Moy amp. I was comparing it with my LD-1+, wich has some new great sounding Voshkod tubes, and my Grado HPA-2, using it's battery circuit, and ended up comparing some of my headphones in the process.
My greatest surprise came when I swapped the TTVJ flats, for the L-cush, on my HP1000, and used the C-Moy, to drive them. The amp's good bass extension, compensated somewhat for the loss of bass due to using the L-cush, so with the added treble extension, and a bigger soundstage, his is the closest that the HP1000 has ever came to sounding like the PS1000.