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Tube rolling Audio Note DACs

I have an Audio Note 2.1x balanced DAC. One of the output tubes recently went bad (they were stock Philips) so i replaced them all with NOS in a bit of tube rolling fun. However, I could swear the new output tubes -- 7308/E188CC Siemens 1969 branded Westinghouse -- have a recessed midrange, but I can't be sure about this as these tubes also have better bass and high-end output than the stock tubes. They may just be better balanced.

Any other output tubes to try on the AN DAC?

Thanks.
budrew
jwaugh
103 posts
 
sorry for the fragmented posts - not my best day!

Incidentally, changing the rectifier helps a lot too. Confirm the type and I can see if I have any spares that you like (gratis since most of those I can never use and feel guilty for hoarding when you could use it)...
budrew OP
467 posts
 
Jwaugh, Thanks. The rectifier tube I added was a Tungsol 6X5GT 1957. This is supposed to be a pretty popular tube with AN DAC users. And frankly yes, my system is fun to listen too. I'm glad to be at the point where I am. Some people dis Mcintosh, but I've tried many other brands and in the end you know what i like.
budrew OP
467 posts
 
There was no mention in the manual about tube rolling or recs for such.
gliderguider's avatar
gliderguider
294 posts
 
I put a pair of new JJ/Tesla E88CC into my 3.1x Balanced, and they did a very nice job - better extension and even more of that wonderful midrange clarity. A pair of NOS Brimars didn't work out as well. I left the rectifier alone.
bambadoo
19 posts
 
I have a pair of Siemens CCa in my AN DAC 1,1 sig and they sounds great.
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