Re: Can I use BMP-1S on a bass?
Welcome to the forum.
In theory, yes, you could add the BMP to the Cort circuit. There will be problems. Firstly, the control cavity may only be wide enough to accept "dime" pots. Secondly, where will the battery fit? Thirdly, the BMP is intended to work with a four-conductor + shield pickups. The stock Cort pickup might well be two conductor.
It might be wiser to forget about the BMP device and consider an active EQ such as the Blackouts for Bass 2-band type or a simple active volume booster such as the EMG PA.