Tube cross-reference
N709 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the N709 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for N709
The following tubes are recorded as possible replacements for N709. This direction does not establish that N709 can replace them.
Power - Pentode (NOT beam)
The database records 6BQ5 as a possible replacement forN709.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | Not recorded | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Where N709 can be used as the replacement
In these recorded relationships, N709 is the replacement tube. The listed original tubes are not automatically suitable as replacements for N709.
Power - Pentode (NOT beam)
The database records N709 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | N709 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | Not recorded | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 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 N709 specifications →