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Problems with Siemens CCa 6922 tubes?

I have used three different sets of Siemens CCa tubes in my amplifier, and all have started to fizzle, crackle and/or pop within a few weeks. Just curious if others have had this problem? My dilemma is that I LOVE the sound of these tubes, and everything else I've tried in this amp (Amperex, Ediswan, Siemens non-CCa, Sovtek, and a couple others) does not sound nearly as good.

Thanks for your feedback and/or suggestions for alternative tubes.
boa2
dekay's avatar
dekay
5,706 posts
 
Boa2:

E288CC is not a direct substitute for ECC88/E88CC/E188CC. Best to check with Audion prior to trying one (the added heater current draw may damage the amp).

I owned an Audio Silver Night 300B SET stereo amp for a couple of years, but am not familiar with the MkII.
albertporter's avatar
albertporter
4,949 posts
 
Dekay is correct about the E288CC not being a direct sub. I have tried it in several circuits in place of 6922 with no problems but the suggestion to check with Audion is a good one.

If they say it won't damage the circuit, you have nothing to loose by giving them a try. Let me know via email if you want me to ship to you.
boa2's avatar
boa2 OP
1,551 posts
 
I've written to Audion about this issue. Thank you for the heads up.
avguygeorge
2,300 posts
 
Gads,I have 2 pair of these CCa's; bought a couple of years ago and have never used/tested them--for my CAT3 phono section. I also have them in my First Sound line stage.---(You know a pre for each foot.)
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