特征：
1.音频适配器
2.可以防止磨损，延长收音机的使用寿命。
3.适用于建武KPG-36, TK-180, TK-190, TK-280, TK-280, TK-285, TK-290, TK-380, TK-385, TK-390,TK-480,
TK-481,TK-490, TK-981TK-2140, TK-2180, TK-3140, TK-3148, TK-3180,TK-2260, TK-3260,TK-5210, TK-5310NX-200, NX-210, NX-300