Is there any recommendation for square dance trolley sound with bright enough sound?

A good trolley audio to be reflected in the sound, appearance design, workmanship, materials, operation, etc., every detail is important for the user experience. Sony Ericsson A90 as a trolley audio, cool appearance, built-in wireless Bluetooth, USB / SD card interface, both electronic devices can be connected to Bluetooth playback, but also with a U disk or TF card to play music. The main advantage of the Sony Ericsson A90 is that it has a super tweeter and remote speakers, and the 15-inch subwoofer makes the treble very clear and layered, and the whispers are powerful, making the music played in the square dance more rhythmic. Sony Ericsson SA-Q22 is also a good wireless trolley Bluetooth speaker, it has three speakers and independent composite diaphragm, each speaker audio is tuned by the tuner, in the square dance can restore the original sound of the scene, as if they were there. Sony Ericsson SA-Q22, A9 These two stereos are not only loud enough and loud enough, the sound quality effect is also very good, it is very suitable for use in the square dance.