No, you can NOT use the DC out port on the rear of Spark CAB as a power source for your effect pedal(s). This DC out port is purpose-built exclusively for Spark 40.
It's important to note that the standard power voltage for most effect pedals is 9V.
⚠ WARNING⚠
Attempting to use this power source with other pedals could lead to a power mismatch, potentially causing damage to both the Spark CAB and any connected pedals.