I presently have six of the 60's CCa sweethearts in my BAT VK-D5. When I owned my ARC SP9 and SP14 pre's: they were also equipped with the same. The most musical/accurate of the family(if you purchase the 60's version, as mentioned above). The 70's tubes pump razor blades through the system(I suppose some solid state lovers would call that, "detail"). I've also used the E188CC, and found them quite nice. A good place to shop:(http://www.audio-tubes.com/) VERY knowledgable/dependable!!
Siemens -Halske 6922
I was wondering if any of you have had personal listening experiences with these babies in your rigs? I would appreciate a discription of the tube's signature, likes/dilikes, the whole nine... thanks, warren :)