Finally one of my 'Look At" pdf's based on a second hand unit i acquired for repair. Not having a MC cart I cannot do a hearing test on the modified MC circuitry but it is hoped it sounds better than before.🙂
http://www.g4cnh.com/public/A_LOOK_AT_THE_YAQIN_MS-33B.pdf
http://www.g4cnh.com/public/A_LOOK_AT_THE_YAQIN_MS-33B.pdf