I am mostly concerned with sound quality. Do you think I will get better sound from a very nice amp being used with a yamaha 1400, or say a yamaha z9 or sunfire ultimate receiver? Eventually I would upgrade the yamaha to a much nicer preamp, however as of now the budget is running a bit thin. If i were to go with seprates I would want a great amp over anything else because that is the item I would not need to upgrade later. But if I can spend a bit less cash and end up with something like a denon 5803 AND get better sound quality then that will no doubt be my choice. Sam.