Well, it's interesting to note that the Heathkit's big brother, the AA-1800 (rated 250 wpc but more like 350) is a full dual mono design with two power cords. Single chassis, but true dual mono.
12-08-11: Orpheus10
I like vintage tuners. In regard to the 180wpc power amp as compared to the very same amp as monoblocks, from a price performance point of view the 180wpc would be the winner; but there's nothing like the 3D soundstage of monoblocks, this is a result of the channel separation. While this is over the top, if you ever get used to monoblocks, you're hooked.
If I had the rack space, I'd love to get a second AA-1600 and bi-amp. Then I'd have a separate amp for each speaker.