What is the 6N23P vacuum tube?

The 6N23P (6N23P-EV) is a triode vacuum tube designed for preamp applications. Military E88CC..

What is a 6N23P substitute or equivalent?

Direct equivalents to the 6N23P include 6922, E88CC. 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 6N23P?

Amplification factor μ ≈ 34, transconductance gm ≈ 12.7 mA/V, plate resistance rp ≈ 2.9 kΩ, max plate voltage 300 V, max plate dissipation 1.8 W, heater 6.3 V / 0.31 A.

Is the 6N23P still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the 6N23P as Moderate 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 6N23P sound like?

Military E88CC.. 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.

6N23P EV Triode Vacuum Tube

Also known as 6922 · E88CC

Medium-gain triode for driver and line stage applications

Dual triodeHeater 6.3 V · 0.31 A9-pin Noval2 sectionsReflektor 1965

Plate dissipation: 1.8W
Max plate voltage: 300V
Amplification factor: 34
Transconductance: 12.7mA/V
Plate resistance: 2.85kΩ

6N23P

Characteristics

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

HeaterIndirectly heated

Specifications of 6N23P — Heater
Heater voltageVh	6.3 V
Heater currentIh	0.31 A

Limiting valuesDatasheet maximum ratings — not to be exceeded

Specifications of 6N23P — Limiting values
Plate voltageVa max	300 V
Plate dissipationPa max	1.8 W

Mechanical

Specifications of 6N23P — Mechanical
Base	9-pin Noval
Rarity	Moderate
Pinout

Small signalDatasheet parameters at the reference operating point — not limits

Specifications of 6N23P — Small signal
Transconductance	12.7 mA/V
Plate resistance	2.9 kΩ
Amplification factor	34

Capacitances

Specifications of 6N23P — Capacitances
Grid–cathode	3.6 pF
Grid–plate	1.55 pF
Plate–cathode	0.18 pF

Charactereditorial reading, not a measurement

Specifications of 6N23P — Character
Gain	34%
Power	5%
Drive	97%
Linearity	83%

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: 12.79 mA
Vg: -1.4 V
Pd: 1.15 W
Gain: 25.5 dB

At Q: Norman Koren
μ: 31.9
gm: 11.2 mA/V
rp: 2.8 kΩ

Design a stage →

Using this tube

Applications

Voltage amplifier
Phase splitter

Generic triode preamp stage

Hi-Fi stereoHeadphone amp

Replace or compare

Sources

By Jean-Michel Falligan DevergneReviewed May 29, 2026Source : Soviet-Tubes 6Н23П-ЕВ · MV Audio LabsActive model : Norman Koren

Manufacturer datasheets

1 manufacturer datasheets cross-checked for 6N23P-EV1 verified

6N23P DatasheetLocal mirror · PDF

SPICE models

Revision and verification status

Source: Soviet-Tubes 6Н23П-ЕВ · MV Audio Labs
Reviewed: 2026-05-29
Status: DataModelCalc
Model: Norman Koren

Context

The 6N23P is the Soviet equivalent of the 6922/E88CC, a premium frame-grid dual triode with high transconductance and a 6DJ8-compatible pinout. Soviet military-grade examples (marked with an OTK stamp and often a rocket or military factory logo) are tightly selected and well-built, offering performance competitive with European E88CC production at a fraction of the price. The Voskhod (Kaluga) and Reflektor (Saratov) factories are the primary sources, with early 1970s silver-shield Voskhod examples being particularly prized. It is a direct drop-in replacement for 6DJ8/6922/E88CC in virtually all circuits.

History

Introduced: 1965
Manufacturer: Reflektor
Era: Late Production

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