FYI - direct from Aguilar - about phantom power / power supply:
If you had the power supply and phantom power connected, the power supply would take precedence and power the pedal, not phantom power.
Here is the current version from Korguilar:
“Ultimately, we feel it is best to only keep batteries in the unit while you are actively or regularly using it on battery power. Whether or not the pedal draws power from installed batteries is determined by a combination of connections to its main Input and 18V DC In jacks at the time.
A connection to the pedal's Input jack will switch on its power if it is actively receiving power at the time. If there are batteries installed in the pedal while a cable is connected to its main input, the only occasion the pedal will disconnect batteries from the circuit and not draw power from them is if there is a connection to its 18V DC In jack at the time. Whether the installed batteries are connected or disconnected from the circuit at the time is dependent on whether there is a physical connection to the pedal's 18V DC In jack at the time - not based on whether it detects incoming voltage from that jack or the XLR. Thus, during periods of non-usage, if you leave a cable connected to the pedal's main Input jack, it will remain powered of if you have batteries installed in it and nothing is connected to its 18V DC In jack. So, in those circumstances, remember to disconnect the cable to the pedal's main Input jack when you are done using it for the time being. On the other hand, if you left a cable connected to the pedal's main Input while something remains physically connected to the pedal's 18V DC In jack (regardless of whether or not the connected power supply is powered off or disconnected at the other end), the batteries in the pedal are disconnected from the circuit so the pedal will not draw power from the installed batteries during that time.
When using the pedal's XLR DI output, there is nothing specific to the pedal's XLR output connection that will disconnect installed batteries from the circuit. So, if you are using the pedal's XLR DI out connection, it will draw power from installed batteries as long as there's a cable connected to its main Input jack and no connection to its 18V DC In jack at the time. As mentioned above, battery consumption is controlled by specific physical connections, not detected incoming voltage. So, even if phantom power is being supplied from the other end of the XLR connection, the pedal can still draw power from the installed batteries. That being the case, if you will be powering the pedal by phantom power, it is best to remove the batteries.
In addition to power consumption concerns, there is the possibility that batteries can leak. To help avoid damage from possible battery leakage, we advise removing the batteries if the pedal will not be used on battery power (or not used at all) for extended periods.
If you have additional questions, please don't hesitate to ask.
Thank you and best regards,
Korg USA Product Support”