Hello experts

I have a question about how Annex E of EN 62368-1:2020 should be interpreted.

Does the classification of the audio amplifier output terminals need to be done 
with the worst case out-of-phase audio signals (to give the maximum channel to 
channel voltage) or with the signals in phase? 

I believe worst case is appropriate, but might not be quite in the general 
spirit of the annex; it would be interesting to know how this gets tested in 
practice.  

Thanks
Chris

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