Way late into this thread, since I've been on since '06, but I just got my first pair of Grado's (SR-80) and I'm in love. I've only had them for a few weeks, but even with the limited burn in time, I'm enamored with the crispness of these cans. Grado fan in progress.
I'm not surprised that you love your SR80, i have the SR80i, and they sound great, especially when you replace the S-cush with the L-cush.
I just recieved my new Little Dot+1 today. The main reason why i bought it was because i found the headphone output on my old Yamaha CA610II a bit noisy. Well, i'm happy to say that the Little Dot is dead quiet, and since i listen to a lot of female vocals, the blacker background makes for a more realistic listen, and give the music more contrast, so to speak.
Tonight i used my SR80i with the L-cush, and since i used the tone controls and the loudness to taylor the sound to my liking, bypassing the tone controls was a bit disconcerting at first, i had to get used to the ''new sound'' i was hearing, but after a few songs, i started to appreciate what the Little Dot was brigning to the table. The bass, although no as deep, was much tighter and the sound was cleaner and clearer, overall.
So far, i'm impressed with this little amp, especially considering how little it cost. It might even give my four times more expensive Musical Fidelity X-Can V2, a run for it's money.
Tomorrow it's going to be the GS1000's turn to partner with the Little Dot, so, to be continued...