Can you use a powered mixer without hooking up speakers? Like, will it blow a fuse or something like if you run just a guitar head without the cab connected?

i'm about to do some recording with my band and realized that i have 2 8ohm speakers and the mixer needs 8ohm, so i can't use them together, but need the mixer for the inputs and stuff..

thanks in advance
My Guitars:
Gibson Les Paul Studio
Epiphone AJ
Ibanez Strat Copy

Orange Tiny Terror Head
Old beaten up Peavey cab
Marshall MG30DFX