In Reply to: Tube rolling? posted by Rick R on March 23, 2014 at 13:35:56:
The 'EM7s are a bit confusing in that apparently identical tubes are branded differently, so I now separate them by plate color and type...for instance gray/gray, gray/black, black/gray, black/black, black/black-Ts, etc. Have NOT formed any opinions on SQ.In 300Bs I have pairs of original Shuguang Treasures, new Psvane TII-series, Gold lion PX300Bs, new EMLs, used JJs, and a trio of Sophia Golden Princesses.
I have many different types and brands of 5U4Gs. The closest I can get to 'top getters' are two almost-identical ones with a D-shaped getter hanging from a wire off the top mica; they're branded Westinghouse and RCA. The most-complicated-looking 5U4Gs, with what appears to be reinforced top micas, etc., are two Sylvanias, one labeled 'U. S. NAVY C.H.S. SYLVANIA' and a commercial version labeled with more-modern-looking green ink.
Again, I haven't formed opinions of SQ on any of these; I just install them, make sure they work for a day or week, and put the next pair in.
Edits: 03/24/14
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Seems I've been accumulating version of all-3 tubes. - jeffreybehr 21:20:55 03/23/14 (3)
- RE: Seems I've been accumulating version of all-3 tubes. - Rick R 11:39:14 03/24/14 (2)
- If I drank any of the wine, there'd be no notes, there would be naps. :-) - jeffreybehr 19:12:00 03/24/14 (1)
- "Come away with me" - Rick R 10:03:30 03/25/14 (0)