Audio circuit and terminal device

A terminal device, comprising:

• an audio circuit, wherein the audio circuit comprises a controller, a first power amplifier, a switching unit, a first speaker, and a second speaker, wherein
• an input end of the switching unit is connected to the first power amplifier, the first speaker is connected to a first output end of the switching unit, the second speaker is connected to a second output end of the switching unit, the controller is connected to the switching unit and the first power amplifier, and the first speaker and the second speaker do not simultaneously operate;
• the first power amplifier is configured to amplify audio;
• the controller is configured to control selection switching of the switching unit, the switching unit is configured to connect to the first power amplifier and the first speaker, or to connect to the first power amplifier and the second speaker;
• the controller is further configured to send a first signal to the first power amplifier;
• and
• the first power amplifier is further configured to adjust an audio gain of the first power amplifier to a first gain when receiving the first signal, wherein the first gain corresponds to the first speaker;
• or
• the controller is further configured to send a second signal to the first power amplifier;
• and the first power amplifier is further configured to adjust an audio gain of the first power amplifier to a second gain when receiving the second signal, wherein the second gain corresponds to the second speaker;
• the first speaker is configured to play audio processed by the first power amplifier;
• and
• the second speaker is configured to play audio processed by the first power amplifier.