The prerequisite for using a monoblock is that you need a pipe box. If you have a box, just boost it. Without it, the tone of the pedal is disgusting.

MXR ZW-44 Zakk signature model overdrive is very good. It mainly depends on what tone you like. It is recommended to try it more or go to a piano store to try it yourself.

Chorus is required

For lead vocals, you just need a delay DD6. Crybaby and wahmmy should also have one.