I recently got a new bass (Pedulla Rapture JJ

). It is the first active bass I have played through my Oxide and compared to my passive Fender it sounds poor. It frequently suffers massive, spontaneous low end loss for a second or two, large variance in volume level or may even cut out. This also seems to happen more frequently when I play faster. I vaguely recall hearing that Brassmaster-esque circuits do not agree with active basses...?
Basically, is there anything I can do about this? Or am I SOL?
Cheers guys,
Adam