You might consider the Benchmark DAC3-L, which is a line preamp and state of the art DAC in your price range new . It has a usb input , 2 coax & 2 optical inputs , and 2 analog inputs . It has a lower noise floor than anything I saw mentioned , with 2 pair of RCA outputs for your amps and subwoofer , and a pair of balanced outputs should you later get a power amp having that professional grade of input . It also sounds fabulous and is reliable, and should you not like it , there will be no problem reselling it .
My opinion .
My opinion .