4 x 12AX7 RCA Tubes

Made in USA

Long Ribbed Black plates

D or square getter

The lettering is pretty nice

Matching codes 57-39

Tested on Enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Ga.

1000/990   micromhos @ .74/.68 mA
1170/1060 micromhos @ .66/.62 mA
1060/1000 micromhos @ .66/.65 mA
1040/1110 micromhos @ .71/.76 mA


 Bogey(100%)  = 1600/1600 micromhos @ 1.2/1.2 mA

I do combine shipping