Jack �m T??ng Canon Soundking Ca217 Thi?t K? Ch?c Ch?n V� Hi?n ??i V?i M�u B?c, Mang L?i Hi?u Qu? K?t N?i B?n B? Cho C�c H? Th?ng �m Thanh L?p ??t C? ??nh S? D?ng Jack T�n Hi?u �m T??ng.