HP just now directed me to this:

EW Audio SECA-20: What’s in the box? ‘Class A’ and lots of it - a Paul Rigby review.

His conclusion: "A magnificent beast, if ever there was one. An amplifier that provides power and guts. That said, the SECA-20 also bases its sonic abilities on a musical balance. It never forgets that upper mids require delicacy and that treble lives off fragility and poise."

Read the whole thing @ http://theaudiophileman.com/seca-20/