Hai,
Marantz CD Players are famous for their SQ. The model CD 53 though old, for the rate quoted i.e 3K, it is a steal. The SQ will be very good, that too with the COSMIC LAB 3000 MKII @ 50w rms. Check the condition of the player, i.e the transports and the lens. Pl check whether it plays properly. I think the Original ( PHILIPS) lens for the same are also easily available at about Rs.500- 600 range.
I have the Marantz CD 48 model with me, playing for the past 4 months and absolutely recommend the make without any second thoughts.
Thanks,
N Murali.