This is a junk item. A compact and powerful 25W bass amplifier. - Brand: ORANGE - Model Name: CRUSH BASS 25 - Output: 25W - Size: Compact - Connections: Input jack, headphone jack, line output - Controls: EQ, Volume, Gain, Compressor - Color: Black Thank you for viewing. The appearance is very clean, but there is no sound. Someone who can fix it, please take it.