I am very familiar with the separates that make up the CAP151 and thought they were indeed excellent. For a slightly different style, McIntosh is equally good. Their MA6900 would actually be my pick over the Classe for your speakers and source. You will get more developed timbre and texture with very natural pace and timing.
However the A308 is a great integrated as well. There is no reason to think it is sluggish or has poor imaging - it is a highly sorted design that sounds really good. Some people feel Musical Fidelity is a sell-out but I don't think so. I feel they make high quality gear and I have enjoyed every MF amp I have heard.
But there are many other options too. I suggest you read all the reviews and then buy one that tickles your fancy and see what you think of its sound. You can't go technically wrong in this price range but you have to find one that suits your style. Good luck and have fun
Arthur
However the A308 is a great integrated as well. There is no reason to think it is sluggish or has poor imaging - it is a highly sorted design that sounds really good. Some people feel Musical Fidelity is a sell-out but I don't think so. I feel they make high quality gear and I have enjoyed every MF amp I have heard.
But there are many other options too. I suggest you read all the reviews and then buy one that tickles your fancy and see what you think of its sound. You can't go technically wrong in this price range but you have to find one that suits your style. Good luck and have fun
Arthur