I've got a problem with noise just as the KPA enters browse or performance-mode at the end of the boot-sequence. It's a hiss or white-noise that can be quite bad for up to 10-15 seconds. How bad it gets depends a lot on which rig the KPA starts up with. A clean rig produces very little noise, while something distorted with lots of delay and other effects may produce a horrible loud squeal. The noise appear even if there's nothing connected to the input so the noise must originate from within the KPA itself. I'm currently running firmware 2.2.1 8963 but have had the same problem with other releases too.
I can minimise the problem if I'm careful to switch to browse-mode and activate a clean rig before shutting down, but would rather not have to. There's also a problem with what seems as random performance/slot selection the first time performance-mode is activated after boot so booting directly to performance-mode is no solution.
In case there's no permanent fix for the problem, is there a way to choose one rig (clean) in browse-mode that is supposed to be opened on boot regardless of which rig was active at shutdown?