Does anyone know here can I find one of these lesser known superheroes in NW London/ SW Herts? For the second time my G/f turned one of the amps on and it went bang! Those of you at Chris (Bottlenecks) valve/ vinyl affair might remember the Audions "spitting" a bit when they were first fired up so they probably need a good service anyway. Any reliable thermomen recommendations appreciated. Cheers Jeff