| Close or identical |
6DJ8, 6N23P*, CV5358 |
| Different rating or performance |
6922, 6922WA, CCA, CV10320, CV2492, CV2493, CV8065, E88CC, E88CC01, ECC868 |
| Different filament voltage |
PCC88, UCC88 |
Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. |