Btw the headphones took a dive in sound quality around the 20 hr mark with a closed sound and very plummy bass. The extra 30 hrs did wonders.
I am driving the th600 with AE Nighthawk. I had a burson Soloist with Audeze lcd3 for a week long home audition prior to the Fostex. Let me say that combo was just sooooo thick and slow sounding. Boring summed it up. My stax combo of 404le and woo ges( cheaper than than Audeze burson combo) was just so much faster cleaner musical.
The Fostex AE combo much better than the Audeze. If I can just get rid of the sibilance!!!!!