What is a pre-amplifier and what is a post-amplifierWhat is an amplifier?Amplifiers, to be precise, are receivers and loudspeakers. English is Receiver, which means to receive audio and video signals and process them to obtain better audio and video effects and output them to video equipment (TV, pr

Do you know the basic maintenance common sense of ten home theater audio equipment?Have a perfect home theater system,How can life not be icing on the cake?However, improper use of home theater audio equipment will lead to equipment damage! So in the process of enjoying life, don't forget to cherish