Aphex IN2 - Manual (Page 5)

Give your session a name and location and click Save.
Go to Setup-Playback Engine.
Use the top dropdown menu to select Aphex ASIO as the Playback Engine.
Selecting this playback engine will automatically save and close your session.
Click Yes.
Click OK and your session will close and reopen.
Go to Setup-I/O.
Click the Input tab. Select the current paths and click Delete Path.
Click DEFAULT.
The new path will display IN2 Analog 1 & 2.
Click the Output tab. Select the current paths and click Delete Path.
Click Delete on the popup window.
Click Default.
The path will now show IN2 Analog 1 & 2.
Click OK.
Go to Track-New.
Create 1 Mono Audio Track in Samples and click Create.
Click the red circle (Track Arm) on your track.
You should now see signal on the input and output meters and hear yourself in
the IN2 headphones.
Ableton Live 9
Launch Live and go to File-New Live Set.
Go to Options-Preferences and click the Audio tab.
Set Driver Type to ASIO.
Under Audio Device select Aphex ASIO.
Under Channel Configurations select Input Config.