EI
ECC83K 12AX7 EI Yugoslavia Short Smooth Plates 14mm NOS Matched Pair
ECC83K 12AX7 EI Yugoslavia Short Smooth Plates 14mm NOS Matched Pair
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€199,95
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€199,95
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Two (2 pc) fully tested NOS NIB tubes, platinum matched pair of extremely rare ECC83K 12AX7 EI made in Yugoslavia on geniuine Philips & Telefunken made tooling machines .
They are real vintage NOS tubes in original Edicron boxes made back in 1997 in EI tube factory in Nis, Serbia. (Elektronska Industrija Nis)
This is extremely rare version with slightly lower amplification factor, low microphonic and low hum, shield between triodes, it's unique design of EI research & development department and it's made on both Philips and Telefunken toolings. They are excellent choice for RIAA preamps as well guitar amplifiers.
We have few 100 pcs boxes of these tubes and we had enough time last few months to carefully measure them on our Metrix and Tesla tube testers for plate currents and Hickok for transconductance and to make platinum matched pairs with balanced triode sections.
Great choice for ECC83 / 12AX7 RIAA preamps!!!
