The TH600 is a V-shaped sounding (semi) closed back HP with some of the best low end you will hear in any headphones around.
ALO Pan Am desktop/portable headphone amp/DAC: Impressions and Reviews - Page 70
Gear mentioned in this thread:
Edited by Rzkr - 7/30/15 at 6:37am
Thanks for your thoughts! I've actually got an audition pair coming in next week so maybe I'll drop a few impressions!
In other news, I posted a while back about my NOS Raytheon JRP 6AK5s and I'm revisiting them now. I swear people, they are as good if not better than the Teles...