This is an Audio Panel used in General Aviation aircraft. It is used to turn on the sound for different avionics. The selections are Speaker, Off, or Headset. It also allows the pilot to control the brightness and audio for the marker beacons. 音频面板 开关箱 有没有 音频面板
music gui panel audio player interface mp3 controls contemporary Audio Panel clip art 音频 面板 音频面板 音频面板剪贴画