hello. sorry for my english. anyone knows what are the differences between the versions the CDM9: CDM9 CDM9-PRO CDM9/44 CDM65 CDM60 are all magnetic handling? you do not need to be calibrated for any of them? top loading? other pros and cons? also wanting to do the modification and improvement on an old CDP (power, clock, S-PDIF) which sceglierste you in a Philips CD940 and CD930 sony x55 or x555? I've already seen here Fikustransport but although I know a bit of electronics I'm afraid to arenarmi hello thanks