If I had a tube with bad micro-phonics I could tell you better.
Everything sounds crystal clear now.
So if ya have the cash and you want to light a match to it...
Go for it !
I find them aesthetically pleasing. (Rationalizing)
I believe I have noticed a change by using a Furman AC215A power conditioner.
I found it new on Amazon for $111 that's an $80 discount.
I might just go ahead and order some after Christmas. I have the Herbie's Tenderfoot feet under the Lyr right now and a set of Herbie's SuperSonic Stabilizers on top of Lyr. I might as well complete the set. I got the National / Matsu 6922's and the socket savers yesterday from Tubemonger, so I have the height clearance to make the dampers fit. I noticed my Lyr runs a lot cooler with the socket savers in place. That alone made the upgrade worth the trip. The Matsu 6922 tubes are pretty good too.