Amplifier -Dac USB Amp Hifi Bluetooth Power Subwoofer Highlights Brand Generic Dac USB Amp Hifi Bluetooth Subwoofer Power Description: Support playing MP3 format files in TF card or U flash driver. Supports the adjustment of treble, bass and different sound effect experiences. Rated power 25W, working voltage 9-28.3V. The voltage is stable, saving electricity, low power consumption, less calorific value and long service life. Input voltage: 12V / 24V / 220V three use It is suitable for all vehicles. Size Chart: Size: approx. 40 x 50 x 100mm / 1.57 x 1.97 x 3.94in Package Include: 1 Piece Power Amplifier Board Note: Due to the light and screen setting difference, the the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.