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tube rolling for Cayin A-50T?

Cayin A-50T: what tubes can be changed out for improving sound? Has anyone used Shuguang Black Treasures anywhere in this amp? Can 6CA7 be used? I have a quad of Groove Tubes GTEL34M,has anyone tried them? What reasonably priced NEW (as distinct from NOS) tubes will work for input or drivers?
Does anyone know what order to implement new tubes for better sound? Should the 12ax7 pair and the 12au7 pair be changed out at the same time? Amp is driving a pair of Aurum Cantus monitors with ribbon tweeters. I'm looking for faster cleaner highs and more nuance throughout the tonal range. Any suggestions or remarks on your own experience would be appreciated.
artspy

Showing 1 response by ericteh

ericteh's avatar
ericteh
29 posts
 
Yes, no problem using the 6CA7. I love the EH 6CA7 but if you are looking for more extended highs, the EH EL34 would be more your cup of tea.

Between the 12AU7 and 12AX7, the 12AX7 makes more difference. Shuguang treasure tubes have a warm and full sound and may not be what you are looking for.
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