Same one I got, I had the previous version but I was definitely missing the volume knob until they added one on the 4.bugz wrote:
DAS Keyboard 4 Pro with MX Brown switches. I think it'll take some getting used to, but I already like it better than my SteelSeries 6Gv2 (black switches which were a lot louder and tiring on the fingers).
Pretty cool that it's USB 3.0 too, you can get full USB 3.0 speeds through the built-in hub now. Also supports full NKRO now for whoever needs to press more than 6 keys at a time.