The invention discloses a stereo with an adjustable sound amplification range. The stereo comprises a mobile base and a stereo body. The stereo body is arranged on the mobile base. A first loudspeaker and a second loudspeaker are successively arranged on one side of the stereo body from top to bottom. The stereo is characterized in that the first microphone which points to the outer side of the stereo body is wound on the outer side of the first loudspeaker and the second loudspeaker; the first loudspeaker and the second loudspeaker are surrounded by the first microphone; and a second microphone is concentrically arranged on the outer end face of the first microphone. According to the stereo with the adjustable sound amplification range, the length and diameter of the microphones are increased through the sound amplification principle of a loudspeaker structure; the sound amplification azimuth and distance of the stereo are changed; the stereo has the advantages of convenient and simple use and fast adjusting; and the loudspeakers are protected.