Do I need a specific type of 4 gauge wire for my monoblock amp?

This is for a class D monoblock subwoofer amplifier. Crutchfield said I should use one that's at least 120 amp.

The fuse goes between the battery and the amp itself.

Class d amps have a higher output than most other class a or a/b amps.

Go to a professional installer and save yourself the angina!

Crutchfield sells a wiring kit for $70 that has 4 gauge wire and a fuse.

Best

JD

Thanks for all the advice. I ordered a good copper wiring kit.
 I might get a stiffening cap for it too.
This is for a jbl bp1200.1 (car audio mono amp) *not home audio.

Ill be hooking it up this week. 
Thanks for the advice everyone.

Dont forget to mig weld a bolt to the chassis as close to the amp as possible and use "heavy" cable for the ground.I have seen many dodgy installations where the installers use a self tapper.When it does come loose the next ground is your front loader...which will be toast!I run 400+400wrms in both of my cars, at 130 x 2 it is mind blowing as i use hi fi 10's and fane compression'sThe frontloader runs the original car speakers..phoenix gold 6.5 x 4.PS dont forget to use a HQ battery in the mobile..I swear by Varta from germany, they can handle it and last up to 10 years.You may been to up your alternator unless you have a high current bosch.