FM9 In/Out 2/3 FX Loop

[cohibaking26]

I want to put some external pedals in “loops” on my FM9. I know humbuster cables aren’t required, but do I need them? Adding noise isn’t an option.

 

[elvis]

Humbusters are for reducing ground loops. If you use good isolated power supplies for the pedals, you shouldn't need humbusters.

 

[Greg Ferguson]

I want to put some external pedals in “loops” on my FM9. I know humbuster cables aren’t required, but do I need them? Adding noise isn’t an option.

See section 4 in the manual, especially p. 36, and p. 6.

Humbuster cables are designed to connect two devices that have A/C power and/or might run into ground loops.