About 35 years ago, I had a Mac in for repair, and the service guy was kind enough to loan me an Adcom in the meantime. I was surprised at just how "solid state" it really sounded. By that I mean harsh high frequencies and grainy mids. The bass was alright. Also very flat regarding depth.
At that time, they advertised heavily, and I was curious about what they were like, although I didn't expect they were as good as the ads said considering the price, so I wasn't really surprised. I have to say that since they have reappeared recently, I am a little surprised at the enthusiastic response. It seemed during the first go-round, after all of the hype settled down, people accepted them for what they were; reasonably powerful amps with OK sound at an affordable price. Maybe they'll fit into that niche again, but I would think that NAD and Rotel would give them a lot of trouble this time.