> Hi Again   I did the test and it sounds nice but one problem the
> guitars clean sound comes beside the distortion sound... is there any
> way to delete the clean sound and let the distortion be the only sound

What, on the Fireface?

Well, the controls are very simple. If you've turned the overdrive to
maximum, I guess that's as much as you're going to get.

If you want an effects box, use one.