Tube cross-reference
6CH6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6CH6 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6CH6
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.
EL821 Power - Pentode (NOT beam)
- Base
- B9A
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.75 A
Replacement tubes for 6CH6
The following tubes are recorded as possible replacements for 6CH6. This direction does not establish that 6CH6 can replace them.
Power - Pentode (NOT beam)
The database records EL821 as a possible replacement for6CH6.
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 | 9BA | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records EL822 as a possible replacement for6CH6.
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 | 9BA | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Voltage Pentode
The database records 6132 as a possible replacement for6CH6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | 9BA | 9BA |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.145 A |
Voltage Pentode
The database records 7499 as a possible replacement for6CH6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | 9BA | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Where 6CH6 can be used as the replacement
In these recorded relationships, 6CH6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6CH6.
Power - Pentode (NOT beam)
The database records 6CH6 as a possible replacement forEL821.
No special restrictions are recorded for this substitution.
| Specification | 6CH6 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 9BA | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6CH6 as a possible replacement forEL822.
No special restrictions are recorded for this substitution.
| Specification | 6CH6 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 9BA | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 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 6CH6 specifications →