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Tube Tinker — Electron Tube Database

Tube cross-reference

6GN8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6GN8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.

Exact variations of 6GN8

These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.

  • 6EB8

    Power - Pentode (NOT beam)

    Base
    9DX
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.75 A

Replacement tubes for 6GN8

The following tubes are recorded as possible replacements for 6GN8. This direction does not establish that 6GN8 can replace them.

6AU8

Voltage Triode Pentode

Receiving Tubes

The database records 6AU8 as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.45 A
6AU8A

Voltage Triode Pentode

Receiving Tubes

The database records 6AU8A as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6AW8

Voltage Triode Pentode

Receiving Tubes

The database records 6AW8 as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6AW8A

Voltage Pentode - Sharp Cutoff (single)

Receiving Tubes

The database records 6AW8A as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Pentode - Sharp Cutoff (single)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6CX8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6CX8 as a possible replacement for6GN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6EB8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6EB8 as a possible replacement for6GN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6HF8

Voltage Triode Pentode

Receiving Tubes

The database records 6HF8 as a possible replacement for6GN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6HZ8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6HZ8 as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DXNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A1.125 A
6JA8

Voltage Triode Tetrode

Receiving Tubes

The database records 6JA8 as a possible replacement for6GN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Tetrode
ConstructionPentode-TriodeTetrode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6JE8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6JE8 as a possible replacement for6GN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DXNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.78 A
6JV8

Voltage Triode Pentode

Receiving Tubes

The database records 6JV8 as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6LF8

Voltage Triode Pentode

Receiving Tubes

The database records 6LF8 as a possible replacement for6GN8.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A

Where 6GN8 can be used as the replacement

In these recorded relationships, 6GN8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6GN8.

6CX8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6GN8 as a possible replacement for6CX8.

No special restrictions are recorded for this substitution.

Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6EB8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6GN8 as a possible replacement for6EB8.

No special restrictions are recorded for this substitution.

Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6HF8

Voltage Triode Pentode

Receiving Tubes

The database records 6GN8 as a possible replacement for6HF8.

No special restrictions are recorded for this substitution.

Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6HZ8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6GN8 as a possible replacement for6HZ8.

  • Parallel heater circuits only
Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DXNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A1.125 A
6JA8

Voltage Triode Tetrode

Receiving Tubes

The database records 6GN8 as a possible replacement for6JA8.

No special restrictions are recorded for this substitution.

Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Tetrode
ConstructionPentode-TriodeTetrode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.75 A
6JE8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6GN8 as a possible replacement for6JE8.

No special restrictions are recorded for this substitution.

Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DXNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.78 A
6JV8

Voltage Triode Pentode

Receiving Tubes

The database records 6GN8 as a possible replacement for6JV8.

  • Parallel heater circuits only
Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6KS8

Voltage Triode Pentode

Receiving Tubes

The database records 6GN8 as a possible replacement for6KS8.

  • Parallel heater circuits only
Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DXB9A
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A
6LF8

Voltage Triode Pentode

Receiving Tubes

The database records 6GN8 as a possible replacement for6LF8.

  • Parallel heater circuits only
Specification6GN8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.75 A0.6 A

Verify before substituting

Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.

View the complete 6GN8 specifications →