Item Type: Audio Preamplifier_x000D_Working Voltage: DC 12V_x000D_Input: 3.5mm_x000D_Output: 3.5mm_x000D_Compatible Input Devices: DVD, CD, set top box, MP3, TV, cell phone, computer, tablet, turntable, sound card, guitar, bass, electronic musical instrument, game console or other device._x000D_Compatible Output Devices: Speaker, subwoofer, reverb, AV receiver, post amplifier, headphone, etc. 1GOOD PERFORMANCE: Stereo signal preamplifier, with audio mix distribution, which has lossless signal and strong anti interference performance. 2EASY OPERATION: The stereo audio amplifier is easy to set up, no need to install special software, applications or drivers, just plug and play. 3METAL SHELL: Adopt excellent aluminum alloy shell, light weight and corrosion resistance, with good heat dissipation effect and long service life. 4MULTIPLE USAGES: Can drive most home passive speakers, passive or active subwoofers, bass and treble controls ensure good music quality. 53.5MM INTERFACE: The stereo audio signal splitter is 2 in 2 out design, with 3.5mm input and output interface, stable connection without interference.1 x AudioPreamplifier 2 x AudioCables