Ian, my use case for this AxiomAir gateway would be my soon-to-be dedicated two-channel set-up. My amplifier for this set-up is functionally minimal. It has RCA inputs, no optical or HDMI but surprisingly, it has a USB input for MP3 players. I see the gateway has RCA outputs for interfacing to my amp.
I would love to have a subwoofer in my two-channel (2.1?) set-up but I don't have a sub out from the amp. If you had a sub out jack on the gateway, you'd open up the possibility of me buying a sub.
In fact, you may be able to treat more ears to your subwoofers if you had a sub out on the AxiomAir.
As for my main system, I can't see how I would use this gateway. There isn't enough of a differentiator between my Onk and the AxiomAir at this time.
I also have some input on the market about subs but I will send you an e-mail about that.
