Hi,
Pretty useless device for a music amplifier, and using theoretical loads.
All amplifiers clip with music way below RMS sine wave power ratings
as decent quality programme spends ~ 80% of the time below ~ 20%.
rgds, sreten.
As your not using the real load what it tells you at best is academic.
who cares? maybe its little difference. In worst case will show more power than power which goes to speaker. This is enough to save your speakers 😉