Steinberg ur12 + di-box

Hello! I use a guitar rig and a steinberg ur12 for recording a guitar. readability is not good. do i need to use a di-box? can he help me?

What do you mean woth “readability”. And certainly it is mentioned in the UR manual that you generally do not need a DI box with the guitar.

And you use the Hi-Z input ?
That input does what a linedriver does, so No you do not need a linedriver.