Package included: \uff08Power Cable is not included\uff09 1x Hi-Fi Stereo AmplifierFeatures\uff1a Material: lightweight aluminum MP3， iPod， CD player input jack Low distortion Great for use on your vehicle or your home Smart， lightweight aluminium casing Lightweight， has a matt silver casing and allows for full control of your volume， treble and bass output. It also has a jack for plugging your MP3， MP4， iPod or CD playerSpecifications: Peak-Power of Output : Main Channel : 300W * 2 Bass : 150W Output Impedance: 4 - 8\u03a9 RMS : 2 x 30W + 35W @ 4ohm Frequency Responce:100HZ--20KHZ Mains voltage: DC 12V， 5A - 10A 2.1 Channel with super bass Size: about 161mm(L) x 136mm(W) x 43mm(H)