The small-sized audio playback system for two input signals to have four which is arranged in quadrangular apex speakers at least, in each case the description above at least four speakers are alienated maximally being alienated and being arranged at the distance which is longer than 1/4 of distance between two speakers. The input signal of the aforementioned two, in order for no two speakers to play back the same signal, is connected by the aforementioned speaker, because of this, the listener perceives bigger sound source than the description above quadrangular and sufficient stereo image. The signal which is received by two speakers which are arranged in the apex adjoining making the signal which is equalized individually from the signal which is received by the remaining speaker is possible. Pectiniform filter phenomenon is made to decrease and at the same time in order for the listener of optional position to be able to possess the large sound source and stereo image, just the time when it corresponds to the sound distance regarding the distance between aforementioned speakers the speaker of the aforementioned two can be delayed. Selective figure Figure 1
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