Here is some kind of MM phonostage with around 45dB gain. Two stages direct coupled with input pentode and output capacitor.
It looks like output impedance is a bit too high – 2k. I like hat official blurb: … of course no feedback. They however forget to tell that pentode operation by default implies feedback but let do not think about it.
Generally, of cause this phonostage need a step up transformer. I however was not so lucky to be able to use step up transformer with pentode input. I have no idea why but I feel that if you use high gain input stages than go for 3 fully active stages and get your 70dB of gain with no transformers. If you already get your 20-30dB input gain by magnetic then there is no need to go with input pentodes.
"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche