Tube cross-reference
6CH8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6CH8 voltage pentode - sharp cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6CH8
The following tubes are recorded as possible replacements for 6CH8. This direction does not establish that 6CH8 can replace them.
6CU8
Receiving TubesVoltage Pentode - Sharp Cutoff (single)
The database records 6CU8 as a possible replacement for6CH8.
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9FT | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 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 6CH8 specifications →