I purchased NOS tubes from The Parts Connection. The price was right but most of the tubes tested poorly. The salesman admitted that they do not test tubes so you are pretty much on your own. Buying tubes from them is a real crap shoot. The salesman did agree to replace tubes but the whole experience was not satisfactory. If it had been only one tube in the batch I would have felt better but it was 4 out of 6 that tested weak.Bottom line, if you don't have a tester or can access one pay extra to get some pre-tested stock.
