Many Thanks Clive… I have been able to assess the quality of the
amplifier much better using my turntable. It sounds far better than my
CD player, could be something to do with the poor quality interconnect
that I am using at the moment, Naim have them DIN thingys, so I may
have the inputs changed to take standard phono plugs,

I will be getting the 322MM boards as soon as they are available. And
am looking forwards greatly to using them.

PS thanks Jim for the links, most informative