Can a ac mixer circuitboard work as a battery powered standalone mixer

[mycelium]

Hi, New member, and new to circuit bending
I've acquired this 4 channel mixer circuitboard out of an old 8 channel ac powered mixer, original unit came with a hard drive, screen, and built in recorder, but I only want the 4 channel circuit board, I'm not fully confident with electricity YET( that will come as a experiment) , I wanted to know if Its possible to use this circuitboard as a standalone mixer, powered by a 12v battery? I'd like it as the mixing station of the portable studio box Im building, for some on the road modular experiments and fun.

Photos
https://ibb.co/VxTc79N
https://ibb.co/fQ60y2N