Used Telefunken
12AX7 (ECC83) Smooth Plate
When they were NOS they were matched by emissions, transconductance, and curves, within 2%. I only used them about five months. 1 pair $150/pr
NOS Telefunken
12AX7 (ECC83) Smooth Plate
This pair, is matched by curves, transconductance, by 1%. The emissions match was within 4%. 1 pr $225/pr
All tubes were purchased NOS from James Fletcher (Cincinnati, OH) and the information is what he provided me. No documents were provided.
Prices do not include shipping. US sales only please.
Pictures available upon request. See my feedback (don_s) on Audiogon. Thank you.
