FiiO E09K High Output Desktop Headphone Amplifier with E17(E17K) Alpen II Portable Amplifier with RCA-to-RCA Cable Kit

The Fiio E09K Desktop Headphone Amplifier with E17 Dock In is designed to work with the Fiio E17 USB DAC Headphone Amplifier and USB soundcard. It features dual-channel power outputs for both 1/4" and 1/8" headphone plugs, as well as an additional RCA L/R audio output, USB interface and line input. The amplifier features a Texas Instruments main power amp integrated circuit with a low noise level, low distortion and a high conversion rate. The E09K is cleverly designed with an E17 dock for using the line out signal from the Fiio E17 docking port. This provides better sound quality and makes the amp able to drive high impedance or low sensitivity headphones -- giving you the clarity and punch to make your music sound alive and vibrant. Plus, it lets you charge and sync the E17 with your computer as well. The E09K even has a Low/High gain section switch, LED power indicator and a built-in power converter to meet the demands of high dynamic signal processing. Based on the Fiio E9, this updated version allows for synchronously working for power supply and turn on/off. When using with E17, it only needs to turn on/off E09K, and E17 will turn on/off at the same time. When selecting AUX IN and DOCK IN signal of E09K, there is no need to take out DOCK from E17, you just need to adjust the switch. The EO9K features reliable, durable RCA gold-plated terminals rather than 3.5mm connectors. Other than these updates, there is no tone quality difference between Fiio's E09K and earlier E9.