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Ei 12AX7 / ECC83 - smooth plates, pre-war Yugoslavia, matched sets

12AX7 / 12AX7A / ECC83 Pre-war Yugoslavia - premium matched pair
Price: From $36.00 to $92.00
Manufacturer: Ei

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The Ei ECC83 / 12AX7 tubes in these precisely matched pairs, trios, quads, and sextets were made in pre-war Yugoslavia and labeled for Audio Research Corporation. They have smooth gray plates and halo getters, just like the famed Telefunken 12AX7 tubes they were modeled after--at a fraction of the cost! The tubes say "made in W. Germany" but the code etched in the glass is for the Ei factory in Yugoslavia.

Tubes test as new with balanced sections and low noise. They are precisely matched for both
current draw (mA) and transconductance (Gm).
 
These tubes are sold as matched sets. Photos are samples from the lot. Single tubes, when available, are listed as Item 701.

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Ei 12AX7 / ECC83 - smooth plates, pre-war Yugoslavia
Ei 12AX7 / ECC83 - smooth plates, pre-war Yugoslavia
Price: From $15.00 to $49.00
Ei 12AX7 / ECC83 - smooth plates, pre-war Yugoslavia
This Ei ECC83 / 12AX7 tube was made in pre-war Yugoslavia and labeled for other companies. It has smooth gray plates and a halo getter, just like the famed Telefunken 12AX7 tube it was modeled after. Click "more info" for current availability.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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