You can build a 1U rack mounted server to run Breakaway in it, that just sits there and works, without the need to have a screen, keyboard, mouse, etc hooked up to it. For a lot cheaper than buying an Omnia.9. You wouldn’t need anything more than one of those single core Atom ones where the CPU is basically "hard-wired" to the motherboard, which are usually very cheap. And then spend a bit of the savings on getting a decent soundcard for it.
That being said, you could just get an Omnia.9 if you have a large budget.
http://omniaaudio.com/9
Final thought: I’ll note that the SRS box is undoubtedly some kind of computer. It’s not analog, so it’s digital, and therefore runs software, on some kind of CPU, which needs an OS to support operation of the device. That’s a computer. 8) So I guess it just depends on what way you want to think of something, from a marketing standpoint where it’s just "a box", or from a technical standpoint… where it’s what it really is. I bet you can get a lot more transparent sounding ADC/DAC in a soundcard you select, than whatever random cheap crap they put into the SRS box. (assuming it’s cheap)