I inquired on pricejapan on these, apparently they've been discontinued. They now have a CS-300F model, has anyone heard of it yet? Supposedly released on 2/13/13 & uses 4x GE JAN 6197 and 2x 17EW8. I haven't got any experience with these two tubes, any opinions? The tubes seem like very low cost items with NOS going for $6 - $30 each from limited research. One of the items I came across said that the 6197 was a computer tube and isn't frequently used in amp designs.
Edit: Some more info, in French (sorry) http://www.nc-audio.com/leben300f.htm
Whew, well I freaked obviously and checked with Tone Audio and they are still making the CS-300XS, they have just dropped the CS-300 for this new one. Apparently the new one is as expensive as a US import 300SX so I don't even want to bother with it.
Obscure tubes might be good, a whole new realm of possibilities and perhaps discovering new "Grails" among them. (Someone else go first though.)
Edited by toschek - 3/7/13 at 6:17pm