Auction is for two (2) fully tested USED tubes, matched pair of rare
ECC83
Valvo 12AX7.
Very rare Long Anodes (17mm) version.
Inclined Big O Getter, the same mC1 D7E Bottom Codes!
Made in famous Valvo Hamburg plant.
Used, tested 120% of NOS values, balanced sections, a lot of life left in them in some decent preamp or guitar amp.
Tested with 250V on anodes and -1.5V on grids (2.15mA is 100%): (2.5/2.6) (2.7/2.6) mA