???????2,???′??2????????,???′??2VIP??????????
V1??10?
V2??100?
V3??500?
V4??1000?
V5??2500?
V6??5500?
V7??12000?
V8??25000?
V9??50000?
V10??100000?
???′??2VIP??????????ε????????????????????????V4????????????????????
VIP?????????????VIP???????????VIP?????????????????????
??????′??2???????????http://audiogearreviews.com/cycs2/