Wondering if there are any pro-quality or semi-pro-quality external devices that can hook up via USB1, 2 or FireWire to your computer, with either 2 or more 24-bit inputs, s/pdif in/out, and so on, but still offer GSIF capabilities? Or does this always require a soundcard? If so, then what soundcard is good for this, and has expandability to connect to external gear for outside of PC recording? Ideally something with balanced XLR outside of computer is what I am looking for.