Wanted E283CC TUBES WTD. NOS preferably?

[paulcheeba]

What Tungsrams do you use @TLRT?

 

[paulcheeba]

I agree though, German Siemens can be really reliable but they don't always sound good in microphones.

 

[Dark1]

From the small photo provided they do look like Siemens E283CC (relabelling within the Siemens concern was a normal practice; later also rebranding, but since E283CC was not produced in the East, this is of no concern, and absolute majority of Siemens-made E283CC were of the frame grid, E88CC-plate-like construction, so practically impossible to fake). But ask the seller to provide photos of the etched production codes to verify.

 

[Dark1]

Also, if the design permits (E283CC can be pushed slightly harder than usual ECC83), changing the wiring of the socket to ECC83 and using special-quality ECC83 variant would be probably still cheaper, plus you can even select better specimen from a larger pool of tubes... And, also ensure you will have spares in the future.