Neewer Super Compact 4-Channel Stereo Headphone Amplifier with DC 12V Power Adapter for Sound Reinforcement， Studio， Stage， Choir， Personal Recording， Features Ultra Low Noise， Premium Sonic Quality<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 4 Independent Stereo High-Power Amplifier Sections: Can power up to 4 pairs of headphones and up to 4 independent volumes; Suitable for all types of headphones </span></li><li><span class="a-list-item"> Wide Frequency Response: 20Hz-20kHz </span></li><li><span class="a-list-item"> Premium Sonic Quality: Maintain premium sonic quality even at maximum volume levels </span></li><li><span class="a-list-item"> Ultra Low Noise: Offer you outstanding audio performance </span></li><li><span class="a-list-item"> Compact and Portable Design: With a mini size of 4.2x2.4x1.8 inches/10.5x6x4.5 centimeters;Weighs only 9.6 ounces/270 grams， easy to use and carry </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51gn3x-tHgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41OAPjLlXHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4123FSnngQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41olIHLA7HL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51BLt2l-jbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51hlX7mBq1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41-dUorzFvL.jpg" noproxy>