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I have read about but not heard the transformer RIAAs and the "No R" version (or was it "no C"?), and I have seen some fairly ingenious ways to try to keep impedance at a constant 600 Ohms.  But the 10k does pique my interest, because now we have the slack to make a real-life, semi-flexible gain stage that might not mess up the RIAA values.  Maybe stand off the tubes with diodes?  Hybrid cascode?

I can do OK with ~40 dB net, so two stages still seems like the reality, and probably the usual "sandwich", with the RIAA between the gain stages.  I don't get one gain stage.  Why/how would you do that, unless you just fed the signal to another gain box?

I'd like to try something like 1/2 of  a 6SN7, with that tone, but less going on internally.

The Da Vinci looks very cool, but I ass-u-me it's priced for punters only, didn't even check the price.

Lord knows, I need a few more transformers in my signal path...  another topic perhaps, but probably germane to this topic.

Best regards,
Paul S

Rerurn to Romy the Cat's Site