Hi, Tony Duell said: [RE: Mullard amps] > Yes, I do have the appropriate Mullard books. Yeah, me too...I built a 5-10 and pre-amp. It was used with, among other things, my pulse-counting fm tuner, about 10 or so EF91s :-) Ah the good old days of mono... -- Cheers, Stan Barr stanb at dial.pipex.com The future was never like this!