Comentário oficial
I was able to get the SB2 ASIO outputs working with Ableton Live 9 in Windows 10. At first, it wasn't latching the audio to the output, so I tried using Voicemeeter Banana and their virtual ASIO cable and it worked. After switching back to the SB2 within Ableton, it did work, so I'm not sure what was up, but you should be able to configure it so you get all 4 SB2 ASIO outputs working, with 3/4 being the headphones.