il y a quelq un qui a trouvé une parade au bruit digital voici
If you encounter a digital aliasing or pulsing issue with your KPA, this is what you should try.
A, Turn on your KPA while holding the System button. This is a reset of your KPA's software, and you don't lose any rigs in the process.
If this didn't help:
B,
1. If you have a backup already, it's ok, but if you don't, make a backup of your current rigs.
2. Delete every rig from your KPA either manually or by formatting it. If you choose to format, you might not need to go through the following steps. If you choose to manually do it, continue.
3. Turn on your KPA while holding the System button. This is a reset of your KPA's software.
4. Restore your rigs from your backup.
http://kemper-amps.com/forum/i(...)eNo=1
je sais pas ce que ça vaux mais c est a tester