More on Amazon.com : http://www.amazon.com/gp/product/B00CU1VCZY?tag=purrfectcatdi-20 <br /> <br />Nuforce MMP-WHITE High Power Portable Headphone Amplifier (White) <br /> <br />High power with 3X or 5X gain to driver Over-Ear headphones for deeper and more dynamic bass <br />Battery powered for long-life portable use <br />Input 1 35mm analog <br />Output 2 35mm analog <br />1 micro USB for power charging
