Description
Up for sale, a quad of 1952 Sylvania 6SN7GT's. These are the good ones, 3 hole plates, copper grid posts. All show correct dates on the bases. These have been used and show some typical burn marks at the top of the envelope. Only one retains the 6SN7GT print on the tube glass, I likely cleaned the others somewhere along the way. These were part of my old 6SN7 stash from when I owned an old Cary 98 preamp. All share identical construction and test well. Exact results are pictured. These will ship bubble wrapped, I do not have original boxes. My test rig is shown below for reference. I feed the tester with 116.4V sine power (my wall voltage is all over the map, frequently approaching 130V in the summer months). This allows for absolute consistency with testing and/or matching. All tests are run in Fixed Bias mode which produces the most conservative numbers. US bidders/buyers only please. This will ship tracked and insured.