Diy Kit for CS8416+CS4398 DAC Board USB+ Optical Fiber 192K/24BIT AC15V-0-AC15V (USB+coaxial DAC 192K/24BIT Board )AC15V-0-AC15V Volatage: AC15V-0-AC15V (13-15V is ok) AC0-9V (9-15V is ok) InPut port: COA + USB