What is the difference between audio and amplifier?

Difference: audio refers to the complete set of products, including, audio source, preamplifier, amplifier, speakers. Obviously, the amplifier is a part of the audio

1, the sound source (play music, song equipment): such as CD players, DVD players, tape recorders, etc.;

2, the amplifier (used to drive the speaker speaker equipment): divided into split-type (including pre- and post-stage) and combined amplifiers, both pre- and post-stage made in a box. Pre-stage is generally used to adjust the sound quality of the equipment, generally the tuning equipment such as equalizers, karaoke machines, etc. are also included, while the rear stage is a pure amplifier, is to drive the power amplifier of the speaker horn.

3, speakers (used to play sound equipment), desktop speakers and floor standing speakers. Generally common computer speakers are active speakers, the amplifier power supply installed in the speaker, so that directly connected to the sound source can be broadcast, do not need to additionally connect the amplifier can be.