Congratulations! You have just discovered AmpTraXX's built-in overdrive protection. It has just prevented AmpTraXX's amplifier circuit from melting into a small pile of molten goo.
There are several ways to bring the Amplifier back out of protection mode:
1. Power-cycle the unit.
2. Issue a Set Filter Type command. If you are using the AmpTraXX application, just change filters.
3. Issue a Reset Amplifier command