Battery cable for amp power

[HDIkyle]

I know audio cable for battery is a no no but how about the other way around? Got my battery cable running from the boot to the front but its jointed via a junction box in the boot behind the seats. Now can I run my amps tho this also? I can get a meter of battery cable with ring connectors on each end to cut in half for few quid. Much easier than buying some more ring ends for my audio cable