I am considering getting a CA dacmagic to add to my current system which comprises CA 640C v.1 CDP,CA 640A v.1 amp and Mordaunt Short 914 floorstanders all connected using decent cables/inters.Will the improvement justify the outlay or just highlight the shortcomings in my system? Assuming I buy one which is the best connection to use s/pdif or toslink and following on from that what cable would you go for? Thanks all.