I was able to bring each systems home over a weekend to listen. My base comparisons are with a MF 3.2 intergrated. The 3.2 pre/power sound similar to the 3.2 intergrated only a lot better (surprise!), cleaner, clearer, more detail, better sound stage, bass etc.. but same basic sound. The A308 is more like the 3.2 intergrated in terms of detail and clarity, but with much richer mids, unlike either of the 3.2s.
Does the A308 really have choke regulation? In the MF reference guide it says it does, but not on their web-site, and in a review in Hi-Fi News they make the point of saying it does not have choke regulation. You would think if it did, it what have 'CR' on the front panel. When I bring the demos back on tues, I will ask if I could do a quick comparison between the two amps using their power conditioner and see if that makes a difference.