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Ei 6DJ8 / ECC88 - A-frame, matched sets

Ei 6DJ8 / ECC88 - A-frame, matched sets
Price: From $44.00 to $84.00
Manufacturer: Ei

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The Ei 6DJ8 / ECC88 tubes in this precisely matched pair were made in pre-war Yugoslavia (the labels on the tubes read "Made in Holland," but the factory code in Yugoslavia is etched in the glass). They have the following characteristics:
  • creases on the top of the bottle
  • dimpled disc getter with A-frame support
  • silver risers
  • white labels
  • Ei factory codes etched along the bottom of the glass

Both tubes test as new. They are matched for both current draw (mA) and transconductance (Gm) on each triode section. These tubes are screened for gas, heater-cathode leakage, shorts, and excessive noise and microphonics. They are tested at typical operating voltages on a laboratory grade Amplitrex AT1000 (manual setting, fixed bias mode). Learn more about our testing process here

Noise and microphonics

These tubes are graded for noise characteristics on our custom sound testing equipment. The grades range from "driver" (moderate noise/microphonics, but still suitable for use in low sensitivity applications such as driver tubes in an amplifier) to "preamp" (very low noise/microphonics) and finally "phono" (selected for the lowest noise/microphonics--these tubes are an excellent choice for sensitive applications such as microphone preamps, DA converters, and phono stages).

These tubes are sold as a precision matched pair. Tubes ship in new white boxes with test results for current draw (mA) and transconductance (Gm) for each triode section. Photo is a sample pair from the lot.

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Ei 6DJ8 / ECC88 - A-frame
Ei 6DJ8 / ECC88 - A-frame
Price: From $22.00 to $37.00
Ei 6DJ8 / ECC88 - A-frame
This Ei 6DJ8 / ECC88 tube was made in pre-war Yugoslavia. It has a dimpled disc getter with A-frame support and silver risers. Click "more info" for current availability.
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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