It has a much cleaner clean tone and has a bit more clean headroom

Although I'm not on a quest for clean headroom, the Tungsol can deliver that in a master volume context.

Jet Citys are not known for their clean headroom but these tubes definitely cleaned it up

Amazing difference in tone, clean headroom, and musicality--especially when driven

The clean channel doesn't break up as early as with the stock tubes (which is what the lead channel is for anyway)

used in an ART Tube MP Preamp, works and sounds really nice, as good as or better than the JJ it replaced