This was how I got it to work . Where I was going wrong was not having the computer speakers as the 1. Download ASIO4ALL v2 here:
http://www.asio4all.com/ 2. Install ASIO4ALL.exe
3. Launch your host recording software or AmpliTube
4. In your audio settings, select the ASIO4ALL v.2 driver
5. View the ASIO4ALL Panel.
6. You are now viewing the ASIO4ALL Panel, click the 'wrench' icon in lower right corner, a red 'X" will appear over it. This is necessary for you to select multiple interfaces for use. You will see various devices listed under the WDM Device List on the left.
Click the enable/power button on both the iRig HD and your other interface that you will be listening to the output from.
7. Once the above is set, view your audio settings window once again. Under Input channels, you can now view and select iRig HD as your input.
Under Output channels, make sure your interface you are monitoring from is selected.
Note: Do NOT enable the 'Hardware Buffer' under Options in the ASIO4ALL panel, as this causes poor performance.
output channel. Below is what support sent me and it worked for me.