More information on your system (components and line conditioning) could be helpful...
Rather than this being due to voltage sag, I would suspect a bit of DC coming from your preamp is causing the amps to go into protection.
Always power on your front end components before the amplifiers and power down in the reverse order.
Parasound Halo dealer.
Rather than this being due to voltage sag, I would suspect a bit of DC coming from your preamp is causing the amps to go into protection.
Always power on your front end components before the amplifiers and power down in the reverse order.
Parasound Halo dealer.