i'm very curious to know what class amp this is.
i don't think it's a class A amp because at a rating of 200-400 WPC, the amp would need to be very large in order to accommodate huge heat sinks or a powerful fan in order to get rid of all that heat.

i also don't understand how the amp power output jumped from 200 WPC to 400 WPC; i guess the transformer would have had to be changed for that; and then, would the circuitry accept that much more voltage without breaking down?

See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery