So, I cocked up today. I recently moved house and dragged out my amp head and cab today, hooked everything up and was jamming away to check it all still worked fine. Sounded a little odd, but I put that down to me not hearing for it a while. After about an hour, I then decided to find my delay pedal and stick it in the FX Loop. This is when I noticed I hadn't plugged my cab into the speaker output, but plugged it into the line out instead. I naturally immediately switched the amp off and corrected the mistake, switched it back on and everything sounded perfectly fine. I'm a little worried I may have damaged the amp, as I know you're never supposed to run an amp with no load. What are the chances I've damaged the amp?
Specifics: Amp is a Bugera TriRec
Cab is a Marshall 1960AV
Ran from Line Out to Cab for about 1 hour Immediately changed the cables upon notice of my mistake