I recently purchased the Kemper Powerhead.
I absentmindedly plugged the Speaker Output of the Kemper into a 'Line6 Spider' Guitar Amplifier. This was for a brief period and I only played very briefly through it before realising my error. I'm worried I may have damaged the Power Amp / Speaker Output.
I have subsequently plugged the Speaker Output to an unpowered Cabinet and things seem fine but I've not used the Speaker Output before and I'm not entirely sure what I should be looking out for with regards to damage.
Also, will using damaged XLR/Jack leads on the Monitor Output and Main Output potentially damage these outputs? This happened to me on a show recently and it was out of my control to resolve the situation.