Usage Tips:2 channel Stereo audio circuit design. Aluminum housing with excellent processing. Super fit for Vehicle, motorcycle, boat, home use with easy installation. This amplifier is built with the introduction of TA8254. It is a product with 9 modern integrated sound system technologies. He draws a power of 25Wx2 RMS. The machine is made of aluminum with a CNC machining. It is a perfect product stylish and excellent sound reproduction! 25 Watt output power of the amplifier makes it perfect for most cars or home audio project or DIY application. Socket for plugging in almost any music source, such as for iPads, cell phones or MP3 players. Input voltage: 2A-5A DC12-13.5V Output power: RMS 25Wx2 Frequency response: 20Hz-20kHz Total Harmonic Distortion (): less than 0.4% Weight: 0.23kg more than 80dB Speaker impedance: 2-8 ohm Colour: picture color Material: Aluminum Size: 14x11.8x4cm Package Contents: 1 * Mini Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.