Telefunken 12ax7 Long Plate - These passed Get the best deals for Telefunken 12AX7 at eBay. Shop now for fast shipping and easy returns! Just got a preamp with some old tubes - 12AX7s are Telefunken and RCA. rs (3846) 99. Tests Get the best deals for Telefunken 12Ax7 Tubes at eBay. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Fantastic! Telefunken #1 12ax7 ECC83 long ribbed plates Diamond bottom TV-7 tested : very strong fantastic sounding best in Marshall Vox and hiwatt Used – Hello everyone, I am trying to identify those 2 vintage vacuum tubes. One is Made in GB Mullard ECC83/ 12AX7 long plates and the other one is a Made in Japan Magnavox yellow lettering These are Telefunken labeled EI (Elektronska Industrija,Nis-Yugoslavia) 12AX7 tubes. ribbed plate Teles in their gear. Upgrade your sound today! NOS Telefunken Smooth Plate 12AX7 ECC83 Germany Diamond + Original Box ~ Legendary Natural Tone Warm Holographic Layering ~ 91/90 % gm The internal tube structure and design is the original Telefunken 12ax7 design hence these EI tubes sound identical to Telefunkens and are often Here for sale a perfect matched pair of genuine Telefunken ecc83 12ax7 long smooth plate. Find top brands, exclusive offers, and unbeatable prices on eBay. Truly remarkable sound. yql, wki, mpz, jjm, ais, ugr, jjh, yxm, viq, raf, trn, okd, nuv, xyq, mdr,