I have been using a qu-24 and AB168 (connected with dSNAKE) which has recently developed two problems – all signals coming to the qu24 are so low many do not register on the channel meter. The second problem is that changing the gain in Superstrip does not change the signal level of channels at all. Any ideas what can be causing this?
Are you sure you’ve got the AB168 patched to your input channels? If those channels were showing signal from USB while no computer was playing audio it would explain your issues.