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

???????С?????????????????????????1-7?????????

????1??~2????????????40~55??

????2??~3????????????186~200??

????3??~4????????????520~600??

????4??~5????????????1620~1700??

????5??~6????????????3348~3400??

????6??~7????????????5040~5100??

?????в??????????????

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