I'm aware this is usually an issue with using an unauthorised version of Amplitube, so bear with me.
I bought an iRig Pro I/O, downloaded and installed the IK Multimedia Product Manager, registered my device, and installed Amplitube via the software tab... and immediately ran into (what people assume is) the "demo noise"
I have installed Custom Shop and executed the "Restore my purchases" function; the Product manager shows Amplitube to be "Authorized"; the busts of static occur even with the simplest of signal chains (ie, just the default "Brit 8000" amp) and with the button immediately to the right of the search bar showing only the "tick" sign.
What's more, if I try using my iRig with only ASIO4All and another manufacturer's app (say, Amplion Demo) I get exactly the same problem.
[Mod edit: redacted - unnecessary]
I'm using a Windows 10 laptop with an i7-1065G7 processor, the problem occurs whether it's plugged into the PSU or using battery, it occurs with both the iRig's supplied USB "A" or USB "C" cables.
Any other troubleshooting suggestions? I'm beginning to deeply regret buying this product; I've wasted days on trying to get it to work [Mod edit: redacted - unnecessary]