Probably Impera Ref but poss Incito S. I have heard most AC pres including Impera Sig and will hear Agito next week but never against each other. Re my question, curious if there are even broad house style / approach / design philosophy that separates these Pres that people can agree on at all and where does Koda fall into that given it’s an older design relative to the newer Pilium and AC products for example.Which AC preamp in particular?