Hello. Model SL1200MK2 and the model SL-1400MK2 is different motor plus also circuit chip set is different. Model SL-1400MK2 use different chassis design with use spring to make double isolation type chassis compare model SL-1200MK2 more rigid chassis design. Plus also model SL-1400MK2 have the automatic function for tonearm plus also digital read out for speed. Model SL-1400MK2 more design for domestic audio in home may be.