I certainly would not kick a 7308 out of bed for lack of a CCa!
Difference between Siemens CCa & 7308
Any significant differences between Siemens CCa and 7308 tubes of the same era? I know the CCa is highly regarded, hard to find and expensive. Seems the Siemens 7308 is a bit easier to find and slightly less costly. Does the 7308 give up much in performance? Thanks!