Winger, at the CES last year they had the Dali MS5 or 4 with the MC402 and MCD201 direct sans preamp and it sounded fantastic. I dont usually care for CD direct but this combination had excellent synergy. I could only imagine how much better it would sound with either the MCD301 or the new MCD500 SACD player as they both have variable outputs. FWIW Gallo also was running the MC402 with the MCD201 without the preamp on his reference 5LS line array speakers with equal results. Skip the preamp and upgrade your source to the MCD500, you will not be thinking about the 501's. 402 is more than enough to drive the 803. Ask your dealer if he will loan you a player or bring one over for an in house demo. Good luck!