what are the pros and cons of either amp power specification?


What are the pros and cons of either amp: 1) an amp that is 100watts at 4 ohms and 50 watts into 8 ohms or 2) an amp that is rated at 75 watts into either 4 ohms and 8 ohms speakers?   For example,  the new POWERNODE 2021 is rated at 80 watts into 4 and 8 ohms where as the Sprout100 is rated at 100 watts into 4 ohms and 50 watts into 4 ohms.

thanks

RLJ


rlj
This subject was covered exhaustively in a 1981 documentary that gave it all the seriousness and respect it deserves:  https://youtu.be/6iCbK3ooekU?t=24
I missed typed the Sprout100 specs its 100Watts into 4 ohms and 50 watts into 8 ohms which I'm comparing to the Bluesound POWERNODE2021 power output.