Tube cross-reference
12SX7GT alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12SX7GT voltage - dual triode (similar). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 12SX7GT
The following tubes are recorded as possible replacements for 12SX7GT. This direction does not establish that 12SX7GT can replace them.
Voltage - Dual Triode (similar)
The database records B36 as a possible replacement for12SX7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 8BD | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.3 A |
Voltage - Dual Triode (similar)
The database records 12SN7GT as a possible replacement for12SX7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.3 A |
Voltage - Dual Triode (similar)
The database records 12SN7GTA as a possible replacement for12SX7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.3 A |
Where 12SX7GT can be used as the replacement
In these recorded relationships, 12SX7GT is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12SX7GT.
Voltage - Dual Triode (similar)
The database records 12SX7GT as a possible replacement for12SN7GT.
No special restrictions are recorded for this substitution.
| Specification | 12SX7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 8BD | 8BD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.3 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 12SX7GT specifications →