Answer:Switch the signal source first, and switch to the signal that is connected now.Replace the source with the socket you plug into the set-top box.
Answer:For speakers (earphones), it seems useless to look at the parameters on the paper. It can be true if you listen to them!The question of whether it is good or not varies from person to person. Many people can't hear the nuances of voice!As far as personal ears are concerned, people who can't even hear the difference from home stereos, speakers (earphones)