one rare pair Belvu 12AX7 ECC83 chrome silver plate

matched strong like NOS

READINGS

measurements were made on a precisely calibrated Metrix U61DM with Va 250V, and -Vg1 2V

tested very strong :

tube 1 Ia  1.4/1.4 mA
tube 1 Ia  1.6/1.6 mA

where a new tube gives 1.2mA with Va 250V, and -Vg1 2V

worldwide shipping with tracking in well made postal small parcel and delivery against signature for 9 euros.

possibility of grouping the delivery, see my other ads.

Important Reminders: “You will get what you see in the pictures"