Speakers make noise when engine is on

[Lafiro]

I can not find information on this here, maybe Im using wrong search phrases.

When my car starts, I hear a nigh ptches noise coming from all the speakers. When the engine stutters, I hear it, and when it revs louder or works harder, it gets louder.

This is getting on my nerves, and I need to fix this.

Im running
Kenwood 8019 HU
Kenwood speakers

Basically 2 serperate amps in the trunk, one for the bass, and a 4channel for the 4 other speakers in the cabin.

The HU has mean cables running to the back, which then feeds into the AMP, and then exit via audio cables to each individual speaker.

Since all speakers are having this issue, what can I do to fix this.

I have moved the speaker cables away from the main power line, but that doesn't seem to help much in my case.

Thanks for all the help.