Responses from lancem

Mullard 12au7 cv4003 tubes? any good?
Thanks for both answers: I'll give them a shot. And Jacob, any suggestions on trustworthy sources for other stuff would be great.Thanks, Lance 
Rolled off highs with unison unico: any solutions
Thanks to all for suggestions: oddly enough the highs came back quite clearly after a few weeks; I assume it was break in, although I haven't experienced that much change with other equipment. But thanks to your suggestions I purchased a new inter...