2Pcs/Pair L/R Set A1398 Internal Speaker for Macbook Pro 15 A1398 2012~2015 Specifications: Compatible Model: 15 MacBook Pro Retina A1398 Compatible Year: 2012-2015 New, Alternative materials used for replacement.tested before shipping. Part: Left Right Speaker Quantity: 2Pcs/Pair(Left Right Speaker) Mid-2012 20120611 MB Pro 15.4 A1398 MC975xx/A Core i7 2.3 15 Retina 2.3 GHz Core i7 (I7-3615QM) Mid-2012 20120611 MB Pro 15.4 A1398 MC976xx/A Core i7 2.6 15 Retina 2.6 GHz Core i7 (I7-3720QM) Mid-2012 20120611 MB Pro 15.4 A1398 MD831xx/A Core i7 2.7 15 Retina 2.7 GHz Core i7 (I7-3820QM) Early-2013 20130213 MB Pro 15.4 A1398 ME664xx/A Core i7 2.4 15 2.4 GHz Core i7 (I7-3635QM) Early-2013 20130213 MB Pro 15.4 A1398 ME665xx/A Core i7 2.7 15 2.7 GHz Core i7 (I7-3740QM) Early-2013 20130213 MB Pro 15.4 A1398 BTO/CTO Core i7 2.8 15 2.8 GHz Core i7 (I7-3840QM) Late 2013 20131022 MB Pro 15.4 A1398 ME294xx/A Core i7 2.3 15 (DG) 2.3 GHz Core i7 (I7-4850HQ) Late 2013 20131022 MB Pro 15.4 A1398 BTO/CTO Core i7 2.6 15 (DG) 2.6 GHz Core i7 (I7-4960HQ) Mid 2014 20140729 MB Pro 15.4 A1398 MGXA2LL/A Core i7 2.2 15 (IG) 2.2 GHz Core i7 (I7-4770HQ) Mid 2014 20140729 MB Pro 15.4 A1398 BTO/CTO Core i7 2.5 15 (IG) 2.5 GHz Core i7 (I7-4870HQ) Mid 2014 20140729 MB Pro 15.4 A1398 BTO/CTO Core i7 2.8 15 (IG) 2.8 GHz Core i7 (I7-4980HQ) Mid 2014 20140729 MB Pro 15.4 A1398 MGXC2LL/A Core i7 2.5 15 (DG) 2.5 GHz Core i7 (I7-4870HQ) Mid 2014 20140729 MB Pro 15.4 A1398 BTO/CTO Core i7 2.8 15 (DG) 2.8 GHz Core i7 (I7-4980HQ) Mid 2015 20150519 MB Pro 15.4 A1398 MJLQ2LL/A Core i7 2.2 15 (IG) 2.2 GHz Core i7 (I7-4770HQ) Mid 2015 20150519 MB Pro 15.4 A1398 BTO/CTO Core i7 2.5 15 (IG) 2.5 GHz Core i7 (I7-4870HQ) Mid 2015 20150519 MB Pro 15.4 A1398 BTO/CTO Core i7 2.8 15 (IG) 2.8 GHz Core i7 (I7-4980HQ) Mid 2015 20150519 MB Pro 15.4 A1398 MJLT2LL/A Core i7 2.5 15 (DG) 2.5 GHz Core i7 (I7-4870HQ) Mid 2015 20150519 MB Pro 15.4 A1398 BTO/CTO Core i7 2.8 15 (DG) 2.8 GHz Core i7 (I7-4980HQ) Package includes: (Without retail package) 1Pair x Left + Right Speaker Set A1398