In the late '90s I had a GFA5802 with B&W Matrix 802's, which sounded really nice. I swapped the Adcom for a McIntosh MC300 and noticed a great improvement overall. The Mac seemed to have more bloom in the midrange and was not fatiguing in the highs. I don't think it had better detail in general, but had better top to bottom coherency and was overall more engaging. Not sure how it would pair with Maggies.
Adcom GFA 5802 Upgrade
I currently have 2 Adcom GFA 5802 amps which I had used to biamp a pair of Infinity Kappa 9 speakers I recently sold. While I'm very happy with their performance, I'm considering selling one of the Adcoms and look for an amp which would be a noticable upgrade in performance. I would like to spend between $1,500 and $2,000 and prefer a solid state amp. Initially the rest of system I would use the amp with is an Adcom GFP750 preamp, Logitech Touch/PS Audio Link III DAC, and Yamaha NS1000M speakers or KEF 104.2 speakers. In the near future, I plan to purchase a pair of Magnepan 1.7s and I would plan to use the new amp with the Magnepans. My musical tastes run from Tony Bennett to Diana Krall to classic rock. Any recommendations or experienced would be appreciated.