If you do the "ping" test, do you hear any ringing? I would expect not.
However, the platter looks nice with the copper finish.
Anyone who thinks CDs sound better needs to listen to my system. Besides, my cables sound better than yours.
Technics SL1200-MK2 SE-1: MN Bearing + Baseplate + AL/CU Platter, Paul Hynes SR7 Power Supply, Isonoe Feet, SME V, Audio Technica AT33EV, CableMaker 1 Tonearm Cable
Technics SL1200-MK2 SE-2: MN Bearing + Baseplate, Copper Mat, Paul Hynes SR7 Power Supply, Isonoe Feet, SME 309, Audio Technica ATOC9/MLII, CableMaker 1 Tonearm Cable