???????????????????????? ?????????????????? ?????????????????????

?????????????????????????????????????????????4399???????????????????ɡ?

????????????????????? ????С????

???????????????4???????????÷?4PL???????????2???3?????????????????2PL???????????????6PL???

??????????????????BOSS????????????

BOSS?????BOSS??????????BOSS??????????!

???????????????????????????(????????????)????????????????MK2?????????? ??????????????????????????????????????????

????С????????45?????(?κ???)?????45???????1~4??????

1???????????70% 2???????????40% 3???????????10% 4???????????2%

BOSS????????????????????45???(?κ???)??

???????鵽??1-4???????????40???????????????????

?????????????40407???????????http://audiogearreviews.com/jjxf/