fotomeow
100+ Head-Fier
- Joined
- Jul 16, 2015
- Posts
- 395
- Likes
- 235
OK, cool. Print me one of these, would 'ya? Note seller's name as one to avoid. His listing stated "Tested Good." No numbers provided, but then I only bid $9.99 for it and won the auction with that (and free shipping). Arrived today. Minimum good for a 7N7 on the 752A is 400, and NOS 7N7's test at 800 or so. Triode 1 at 425, triode 2 at 250. Different numbers but same story on the 539B -- first triode is just a hair above minimum, and the 2nd triode is a goner. If this guy tested the tube (which I doubt), his tester hasn't been calibrated since it was built. These kind of sellers just really piss me off. If I didn't have a tester (or 4 or 5), I'd just assume the tube was good....
Interesting about the 7n7, and every US tube manufacturer made them.
http://vinylsavor.blogspot.com/2015/02/tube-of-month-7n7.html?m=1
Replacing you 6SN7 on your Lyr?