Sad to say before I write this, had to give up 2 possessions of Hd800 in search of a good match. Finally came across Woo Audio WA6SE and decided to try for the third time. The result was a third purchase
of HD800 plus Woo Audio WA6SE! The best match I heard for the Senn, that is for ...me. You guys might wanna try it out specially with a Sophia 274b tube! Never heard the Hd800 sound big sans the digital sound.