Quote Originally Posted by Marco View Post
Perhaps results are different through a valve phono stage? Since you're thinking about building a valve amp, why not build one with a valve MM phono stage and revisit the transformer thing to see what happens?
I was using a Puresound P10 (valve) phonostage at the time.

The hum problem did seem to be a 'local' issue as we tried the set-up at a friend's house where the problem wasn't as bad.