Joleritc 4-channel Stereo Headphone Amplifier - Ultra-compact Mono & Stereo Switch

A headphone amplifier mixer is a device that combines multe o signals and amplifies them to drive headphones. Specifications: Plug: EU / US (Optional) Material: Metal Color: Black Input: AC , 50/ 60Hz Output: DC 5V Item Weight: 170g / 5.99oz Item Size: 103 * 57 * 28mm / 4.05 * 2.24 * 1.10in Package Weight: 280g / 9.87oz Package Size: 13.7 * 13.7 * 5.2cm / 5.39 * 5.39 * 2.05in Package List: 1 * Headphone Amplifier 1 * Adapter 1 * User Manual (English)