I have tested a tube pre with both B-Amp & Forte as well as Forte HP. It worked fine. Not sure I would ever go to the trouble taking it to a gig. Especially with the Forte HP, as the drive circuit is extremely usable. Perhaps it would be of use with the standard Forte, but just don't see the need with Bamp or Forte HP. But as far as usable, yes, works fine. I don't have a Noble to test, this was an ART.