What is the 6922 vacuum tube?

The 6922 (6922 / E88CC) is a triode vacuum tube designed for preamp applications. Premium 6DJ8. Sought-after for hi-fi preamps..

What is a 6922 substitute or equivalent?

Direct equivalents to the 6922 include E88CC, 6DJ8, CCa. These share the same pinout and operating envelope, so they can usually be swapped without circuit changes — though batch-to-batch variations between manufacturers (NOS vs current production) may shift the sonic character noticeably.

What are the key specifications of the 6922?

Amplification factor μ ≈ 33, transconductance gm ≈ 12.5 mA/V, plate resistance rp ≈ 2.6 kΩ, max plate voltage 250 V, max plate dissipation 1.65 W, heater 6.3 V / 0.3 A.

Is the 6922 still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the 6922 as Sought-after availability. NOS (new-old-stock) examples from RCA, Mullard, Tung-Sol, GE, Sylvania and Telefunken trade among collectors; modern production where it exists comes mostly from JJ Electronic, Electro-Harmonix, Tung-Sol (New Sensor), Genalex, and a handful of small-batch makers.

What does the 6922 sound like?

Premium 6DJ8. Sought-after for hi-fi preamps.. Sonic character also depends heavily on the circuit operating point, the surrounding tubes in the stage, and the output transformer when present — use the interactive loadline calculator on this page to explore the trade-offs.

6922 E88CC Triode Vacuum Tube

Also known as E88CC · 6DJ8 · CCa

Medium-gain triode for driver and line stage applications

Dual triodeHeater 6.3 V · 0.3 A9-pin Noval2 sectionsAmperex·Philips·Siemens 1958

Plate dissipation: 1.65W
Max plate voltage: 250V
Amplification factor: 33
Transconductance: 12.5mA/V
Plate resistance: 2.65kΩ

6922

Characteristics

Datasheet values, once each. Every value cites its sheet.

HeaterIndirectly heated

Specifications of 6922 — Heater
Heater voltageVh	6.3 V
Heater currentIh	0.3 A

Limiting valuesDatasheet maximum ratings — not to be exceeded

Specifications of 6922 — Limiting values
Plate voltageVa max	250 V
Plate dissipationPa max	1.65 W

Mechanical

Specifications of 6922 — Mechanical
Base	9-pin Noval
Rarity	Sought-after
Pinout

Small signalDatasheet parameters at the reference operating point — not limits

Specifications of 6922 — Small signal
Transconductance	12.5 mA/V
Plate resistance	2.6 kΩ
Amplification factor	33

Capacitances

Specifications of 6922 — Capacitances
Grid–cathode	3.1 pF
Grid–plate	1.4 pF
Plate–cathode	1.75 pF

Charactereditorial reading, not a measurement

Specifications of 6922 — Character
Gain	33%
Power	4%
Drive	97%
Linearity	84%

datasheet cited · model or editorial reading · catalogue value, no citation attached yet · nothing invented

Typical operation

Canonical operating pointModel

B+: 150 V
Load: 4 kΩ
Va: 90 V
Ia: 15.05 mA
Vg: -1.6 V
Pd: 1.35 W
Gain: 25.5 dB

At Q: Norman Koren
μ: 30.7
gm: 12.07 mA/V
rp: 2.5 kΩ

Design a stage →

Using this tube

Applications

Voltage amplifier
Phase splitter

Audio Research SP-6 preampBAT VK-5i

Hi-Fi stereoHeadphone amp

Replace or compare

Sources

By Jean-Michel Falligan DevergneReviewed May 29, 2026Source : Philips/JJ E88CC datasheet (frank/pocnet)Active model : Norman Koren

Manufacturer datasheets

2 manufacturer datasheets cross-checked for 6922 / E88CC2 verified

6922 DatasheetLocal mirror · PDF

SPICE models

Revision and verification status

Source: Philips/JJ E88CC datasheet (frank/pocnet)
Reviewed: 2026-05-29
Status: DataModelCalc
Model: Norman Koren

Context

The 6922 (E88CC) is the premium long-life version of the 6DJ8, specified for 10,000-hour minimum lifespan versus the 6DJ8's 5,000 hours, with tighter manufacturing tolerances. It is electrically identical to the 6DJ8 but built with better materials and quality control, making it the preferred variant for critical audio applications. The E88CC designation follows the Philips/Mullard European naming convention and is the same tube. Amperex PQ (Premium Quality) and Siemens E88CC are the most desirable NOS variants, with Amperex commanding particularly high prices for genuine Holland-manufactured examples.

History

Introduced: 1958
Manufacturer: Amperex·Philips·Siemens
Era: Golden Age

METRIX TESTER