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Amperex 6922 / E88CC - early D getter, phono grade, matched pair

Amperex PQ 6922 / E88CC - D getter, matched pair
Price: $279.00
1 matched pair in stock
Item Number: 828
Manufacturer: Amperex
The 1960 Amperex 6922 tubes in this precisely matched pair are an upgraded 6DJ8 / ECC88 tube type. The white print on the glass has the PQ label (partial on one tube), indicating selection for premium quality. The New York factory codes are etched in the glass.
 
Both tubes have the following characteristics:
  • creases on the top of the bottle
  • the New York factory code etched in the glass
  • gray risers
  • round shield with two raised rectangular sections on opposite sides
  • curved D getter with wide support post
  • white label with the PQ shield (partial on one tube)
  • gold pins
Testing

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 test as “phono grade”—the quietest range for noise and microphonics—on our custom noise testing equipment. They are an excellent choice for sensitive applications such as microphone preamps, DA converters, and phono stages.
 
Pricing

These tubes are sold as a matched pair. Singles, when available, are listed as Item 508. They ship in new white boxes with test results for current draw (mA) and transconductance (Gm) for each triode section. Photo is of the actual tubes.

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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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