thanks for the detailed info. i’m aware of the 600 ohm network issues (vs 10k), however i’m considering an already made unit so most of them are already addressed by thorsten and the builder. i was surprised with the mentioned S&B network - never heard about it before - and now it seems (apparently) that silk one was a reversed engineered one upon it.
i do have a LCR based phono for quite some time (as well as another RL one, FWIW). i do think that shishido one I have can be bettered sound wise, hence my current curiosity. or i’m bored, which is more certain.
So, input and output connectors for stereo but only 5" x 6" x 7" or so inside. Hmmm. What sort of a valve amp would fit in there ? I was going to say a hybrid one. But the speaker conns suggest a tapped output transformer, so no.