I'm getting a rather serious upgrade itch to replace / update my current amplifier / cd combination. I have MF A3cr pre & power units at the moment and i'm looking to stay with the brand in the form of the A5 range. I wanted to ask if i would hear an improvement replacing the amps with the A5 integrated or would it be a wiser decision sticking with seperate pre / power units. Would there be a big sonic improvement changing the cd to the A5 or just subtle (also keeping the wife happy aesthetically). Thanks