LrnzpKiller :
It might be from windows audio endpoint builder, but still i would check for virusses, 'cause they can cause the same problem (you can't be sure enough)
I guess you didn't see my edit a while ago.. You're right. I think it's caused by Windows Audio Endpoint Builder. I tried disabling it on services.msc and the cpu usage of svchost dropped significantly. There's 3 devices on my Audio Devices.
1: AMD High Defiinition Audio Device(Not plugged in)
2: VIA High Definition Audio(Default Device)
3: SPDIF Interface(TX0)(Ready)
Do you think It's because of the AMD High Definition Audio Device? I've tried disabling it but the svchost is still high on cpu usage.