Thanks for the info. The HE-500 are definitely on my short-list radar. I own the Cary SLI-80 Signature F1, Direct-Coupled, Triode Only, Zero Negative Feedback Edition fro Upscale Audio. I also have the original Jensen CiO caps replaced with V-Caps which further enhanced the amp. (quicker, tighter, better on both extremes)
Davo50, what speakers are you running? I am driving the Merlin TSM-MMi's with Master RC's.
I am also looking into trying the AKG Q701's. What headphones have you guys tried with this amp?
I havent used the headphone out too much. It turns my Grado SR80 into a completely different animal. So I'm not sure if I should just climb up the Grado line or not. I coiuldnt stand the Senn HD600's. (too dark and veiled, muddy bass)