So, first impression of the Andromeda, "I thought it'd be bigger." In good shape though.
On lifting it? "Thought it'd be heavier."
Then I pulled the GFA-555 out. While it cut an imposing figure, the chassis full width front to back where the Andromeda looks a little odd outside a rack with its very wide face plate but relatively narrow / shallow chassis...
The Adcom wasn't as heavy as I remembered. Substantial, sure, but the SUMO was noticeably heavier despite being more compact.
It's also significantly taller than the Adcom, so I had to move the pre-amp under the PS4.
Point against SUMO - it thumped the hell out of my speakers on power up. Point for: looks just as badass as I remember.
And it sounds as good as it looks. I love the GFA-555. It's a great amp. That said, I'm going to take the next week or two to A/B it and the Andromeda. Not a completely fair comparison as I'm sure the 555 could use a re-cap and the Andromeda just got one. If the first impression stands... The Adcom will be for sale soon.
I've always been one to sneer when people get flowery describing the sound of amps, but in this case "bass with ''authority'" makes sense, suddenly.
Edit: added a couple pictures from the listing, and a couple of my own.