Raysonic 168

Reb, Glad to hear it wasn't my imagination. It also explains why I wasn't able to get the sound of the sonic signature from the tubes I was using unless I used all four of the same brand. Interestingly it makes the permutations seem infinite - perhaps not so good for the anal folks. :-)

BTW, how do you like the 168? Anything to compare it against? Have you heard the 128?

Newbee, I will give all 4 tubes changed out to the same good ones a shot in the upcoming weeks to see If I can concur the inner and outer have effects on both outputs. I definitely can say just changing one pair at a time had large effect by itself, but if its even better with a Matched Quad than I will keep it that way, I just don't have access to my system right now to do any testing.

any conclusions?