I don't know if this will help you, but I can share what I have experienced. I had a B&K Ref 50 and upgraded to a Lexicon MC12 B, and currently to a Theta Casablanca II. I didn't think that the Ref 50 was anywhere near the league of the Lex. Since Proceed is/was in the Madrigal audio group, I am guessing the AVP will outperform the Ref 20. I will go a step further and say the Theta Casablanca II is the best I have personally experienced for both 2-channel and multi-channel. I intend to upgrade or purchase a CB III with extreme DACs some day, after grad school. Hope that helps.
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