Hey @nathanpovo apologies for the late reply. Connecting via the 1/4” input will not supply power to the sensors. The sensor inputs on the Portal provide the correct amount of power for the v2 sensors, and while some users have had success using a step-down converter from 48v to 12v to connect to the XLR inputs, there is still a risk of damaging your sensor.
If this happens, such damage will not be covered by the Evans warranty. We are looking at official solutions for expanding inputs into Sensory Percussion and hope to have more information about this soon!