for sale: pair of rare vintage 5751 tubes made by GE for the military (JAN = Joint Army Navy). Double mica, grey plate.Tested with a Sencore tube tester at 102/102 and 102/102 where 100 is considered new (also matched test results on a B&K tester at 86/86 and 86/86). Vintage tubes (looks like 1972 from the box) - but guaranteed to work (test results not guaranteed to be the same, of course). I tried these and they worked and sounded great. Sold for use or collection. Original boxes. 5751s are direct replacements for 12Ax7s, though with slightly lower output level. 5751s are considered quiet tubes and often recommended for use in phono applications. if you are looking to try 5751s here is a low cost entry point. $5 to package and mail in US. please contact me for shipping quote to other countries. Thanks for looking.
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