New Bluesound's Node 2i

I just picked up a Vault 2i.   I assume is uses the same DAC as the Node 2i , does anyone know what chipset it uses?

Thanks, sounds great ... better than I expected.

I bought a node 2i so that I can get sound into my main rig while I don't have internet here for a few months.  I live in the camp fire area and we are without internet so I thought that I could stream from my phone to the node 2i and into my big rig via toslink into my DAC.  I am really bummed with how bad this thing sounds at least via bluetooth.  I am starting to think bluetooth is just plain bad.  I can't use airplay since my phone can't be on the network and get LTE service at the same time so I have to use bluetooth.  Seems like airplay is always better sounding than bluetooth.  

Older models now on big discount straight from the Bluesound site direct. Claim on the 2i is that they garnered increased performance from working on some pricier NAD offerings like the new C-658.