USNRET Posted December 30, 2017 Share Posted December 30, 2017 I am removing the Mc branded tubes from the MC2000 to put away. Replacing with the pictured ones. Also swapping out the C2500 line stage tubes. Quote Link to comment Share on other sites More sharing options...
Schu Posted December 31, 2017 Share Posted December 31, 2017 I've been impressed with non-vintage gold lions... they are good but not special. I'd try psvane or shuguang top line tubes... they are very reasonable and sound very good. Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 31, 2017 Author Share Posted December 31, 2017 I'm not much of a roller just wanted to save the originals for whatever reason BUT these sure improved the sound. The sweet spot is much bigger especially in the fore/aft plane. Better / wider sound stage and great center. Very little bias drift from 2 minute set to 30 minute check. Quote Link to comment Share on other sites More sharing options...
Schu Posted December 31, 2017 Share Posted December 31, 2017 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 31, 2017 Share Posted December 31, 2017 23 hours ago, USNRET said: I am removing the Mc branded tubes from the MC2000 to put away. Replacing with the pictured ones. Also swapping out the C2500 line stage tubes. I am intrigued by the Tung-Sol 12AX7's, especially since the box also states ECC803S. Do you know if these are new production or vintage? Some of the Tung-Sol tubes were made by RCA. Would you mind taking a photo of the codes on the tubes? Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 31, 2017 Author Share Posted December 31, 2017 11 minutes ago, jimjimbo said: I am intrigued by the Tung-Sol 12AX7's, especially since the box also states ECC803S. Do you know if these are new production or vintage? Some of the Tung-Sol tubes were made by RCA. Would you mind taking a photo of the codes on the tubes? Per your recommended contact they are ECC803S/12AX7 Tung-Sol reissue Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 31, 2017 Share Posted December 31, 2017 OK, thanks. Happy New Year, and may you enjoy many hours of pleasurable listening with that incredible amp..... Quote Link to comment Share on other sites More sharing options...
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