Quote Originally Posted by SeanGTP View Post
Uhm where did you read that? You can find a 170A fuse. Your best bet is to MATCH. 125A will give you LESS power than your amp needs, starving it, going OVER 170A shouldnt hurt, but still allows more power than your amp will need.

TECHNICALLY you can go with a 125 because you're not going to be using all that power right now anyway, but if you upgraded subs, you'd want a matching/bigger fuse.
Why would you ever want your main fuse to be rated higher than your amp fuses? If you're blowing fuses in your amp, you got problems. I would much rather my main fuse blow before the amps.