[1100 man]

Hi Tim,
The OM20 has an output of 4mv which is in the same ball park as your one. I would have expected the amp to work fine with that.
I can't find any spec for the phono input for this amp but I suppose the question would be what sort of outputs did 1960's hi-fi cartridges have?
Completely forgot the pictures yesterday- until it was dark! Will do them today and email them later.
The turntable will not have any affect on the output from the cartridge.
Cheers
Nick