NOS tubes for Sonic Frontiers Line 1

Well I am now looking at an early 60s matched pair of Siemens E188CC 7308 gold pin NOS tubes. I want to see if I like a warmer sound. Any opinions? This tube rolling could become addictive.
Have any of you experimented with the placement of tube dampers on the tubes? 1/3 down from the top, verses half way down from the top, in the middle. I swear I can hear a difference with the Herbie's tube dampers. 1/3 down tighter, half way down warmer. Is it my imagination??

Tubes came today. Did not get the Siemens E188CC 7803. By the time I made up my mind to buy them they were gone, already sold. I bought a matched pair of Siemens CCa gold pin tubes from the 60s. The sound, different from the Amperex PQs. The CCas are warmer, I think smoother, Still eary to tell. Little hard to do an A/B comparison with tubes. So far I really like the CCa. I will report back in a couple of days.

Jim

Well, I like the Amperex PQ tubes better. The PQs are cleaner, quieter, more lively than the Siemens CCa. The CCa is warm and smooth but I found myself dosing off.
Now my search for a matched pair of USA made white label Amperex PQ 6922 gold pin early 60s.
Anybody want to buy a pair of very slightly used NOS NIB Siemens CCa gold pin tubes?

Jim

Jea48,Both myself and a pal are on the prowl for 6-12 Amperex PQ 6922's.May the best man win the race!!!

I owe the Siemens CCa tubes an apology. It took about 25 hour of break-in time for the CCa to start to open up and come alive. I now have about 30 hours on them and I am impressed. So much so I cancelled my add on Agon. I couldn't replace them for the $180.00 I was asking. After I get about 50 hours on them I will compare them again to the PQs. I will report back then.

Jim