within the two and a half hours of listening to the valvo red label df91 - tung-sol kenrad dl92 combo the sound and especially the bass extension has improved that much and to a level so amazingly good that the bass quality of the vp combo is maybe more than reached and the soundstage of the vp combo seems to be smaller in comparison.
i have to compare this two combos again tomorrow !!!!
Edited by GermanGuy - 7/16/13 at 2:22pm