Tube cross-reference

6LQ8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6LQ8 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6LQ8

The following tubes are recorded as possible replacements for 6LQ8. This direction does not establish that 6LQ8 can replace them.

6JT8

Voltage Triode Pentode

Receiving Tubes

The database records 6JT8 as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.725 A

6KR8

Voltage Triode Pentode

Receiving Tubes

The database records 6KR8 as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 A

6KR8A

Voltage Triode Pentode

Receiving Tubes

The database records 6KR8A as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 A

6KV8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6KV8 as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Power - Pentode (NOT beam)
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.775 A

6LB8

Voltage Triode Pentode

Receiving Tubes

The database records 6LB8 as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	B9A
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.725 A

6LY8

Voltage Triode Pentode

Receiving Tubes

The database records 6LY8 as a possible replacement for6LQ8.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 A

Where 6LQ8 can be used as the replacement

In these recorded relationships, 6LQ8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6LQ8.

6JT8

Voltage Triode Pentode

Receiving Tubes

The database records 6LQ8 as a possible replacement for6JT8.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.725 A

6KR8

Voltage Triode Pentode

Receiving Tubes

The database records 6LQ8 as a possible replacement for6KR8.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 A

6KR8A

Voltage Triode Pentode

Receiving Tubes

The database records 6LQ8 as a possible replacement for6KR8A.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 A

6KV8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 6LQ8 as a possible replacement for6KV8.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Power - Pentode (NOT beam)
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.775 A

6LB8

Voltage Triode Pentode

Receiving Tubes

The database records 6LQ8 as a possible replacement for6LB8.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	B9A
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.725 A

6LY8

Voltage Triode Pentode

Receiving Tubes

The database records 6LQ8 as a possible replacement for6LY8.

No special restrictions are recorded for this substitution.

Specification	6LQ8 replacement	Original tube
Tube type	Power - Pentode (NOT beam)	Voltage Triode Pentode
Construction	Pentode-Triode	Pentode-Triode
Base	9DX	9DX
Socket	B9A	B9A
Base pins	9	9
Sections	2	2
Heater voltage	6.3 V	6.3 V
Heater current	0.775 A	0.75 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 6LQ8 specifications →