Just met with a local guy and picked up some new tubes.   Two are Sylvania JAN-CHS 6SN7WGTs with matching production codes, and the third is a Tung-Sol 6SN7GTB tall bottle.Anyone else have experience with these?   Pictures of them: http://imgur.com/a/ZwcPk   I also picked up some RCA...

This link would seem to indicate that the CV181-Z (the shuguang treasure tube) would be a safe replacement for a 6SN7 even if your standard CV181 is not. I'd like to try it out, but some confirmation from someone who's tried it before would be appreciated.

I find the Chinese hi-fi market to be altogether fascinating. It always seems that when I'm looking for something rather specific (say, a DAC with a tube stage) at least a couple of the leading contenders will be from Asia. The same cant be said for speaker systems, but it's hard to avoid in...

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