@mmbl622
I find in interesting how so many can so passionately claim there is no way a voltage regulator tube in the PS can play a part in SQ. Well I was a skeptic until yesterday. I recently got an ARC REF 5SE and wasn't as impressed as I expected moving from the LS27. My 6550 had about 1800 hours and I swapped a new EH 6550 and was blown away. I took the time to swap the old one back and then to the new one again and there was no question. Everything opened up with such better detail. All the instruments and voices popped and were so precise. I had read in some thread here a while ago how important these 6550s are in ARC preamps. I am going to stock up on the Sovtek as that is what ARC ships their units with so that's good enough for me.
I find in interesting how so many can so passionately claim there is no way a voltage regulator tube in the PS can play a part in SQ. Well I was a skeptic until yesterday. I recently got an ARC REF 5SE and wasn't as impressed as I expected moving from the LS27. My 6550 had about 1800 hours and I swapped a new EH 6550 and was blown away. I took the time to swap the old one back and then to the new one again and there was no question. Everything opened up with such better detail. All the instruments and voices popped and were so precise. I had read in some thread here a while ago how important these 6550s are in ARC preamps. I am going to stock up on the Sovtek as that is what ARC ships their units with so that's good enough for me.