Originally posted by DustyChalk
And the Senn HD600's as below average
600's bass below average??
When's the last time you rolled tubes in the RKV?
Slightly more seriously, I've been rolling tubes in the ZOTL, and am getting much closer to the "right" ones. The ZOTL with Sylvania 6SN7 GTB's can take the 600 very deep with very tight definition.