With playing in our practice space preferably I like to play w/ headphones and through the amp at same time.

Previously I owned a Crate BX series bass amp head/ 4x10 cab and it included a headphone out w/ volume adjustment.

To "upgrade" I picked up a Gallien Kruger combo due to weight difference and power difference in the 2x12 combo.

The biggest problem I have now at hand is the amp itself has

passive out| active out| eq 1 2 3| volume| headphone out| xlr out| etc

To the point here, when you plug in headphones it disables the output to the speakers on the amp. Are there any suggestions on pedals or anything else that would allow me to not only plug in headphones but continue to flow signal to my effect pedals?