[jeffro]

Welcome to the community.

Great advice from Darryl (thanks).

Line Outputs on guitar amps are traditionally less effective at providing the sound of the amp when recording (unless they include cabinet modeling, etc.). I'd use that to feed another amp or maybe a PA if I ran out of mics. Typically get better recordings by putting a mic in front of an amp to capture the sound of the speaker/cabinet/room which is what you are used to hearing.

I took a quick look at their website and am curious about the HEADPHONE/REC OUT (is it switchable?) as well as the USB connector. Need more info but one of those might get you closer than using the Line Out. Otherwise, as Darryl suggested, you might need to make up for deficiencies with plug-ins.