Feature: 1. Versatile Design: Specifically designed for all types of headphones, the headphone amplifier provides maximum flexibility to ensure outstanding sound performance. 2. Four Independent Channels: Headphone amp features 4 separate output channels, each with individual volume control, catering to diverse listening preferences. 3. High Power Stereo Amplifier: Experience unparalleled sound clarity and detail with this high power stereo amplifier, ensuring exceptional sound quality that remains crisp and dynamic even at maximum volume levels. 4. Low Noise Work: Ideal for studio and stage applications, with its super low noise amplifier ensuring crystal clear sound performance. 5. Stylish and Robust Design: Crafted with an iron case, stylish and robust, this headphone amplifier not only enhances your sound experience but also adds a touch of style to your setup. Specification: Item Type: Headphone Amplifier Material: Iron Case Input: 1/4in TS Connector, Stereo Impedance: 100kΩ Maximum Input Level: +15dBu Headphone Output: 1/4in TS Connector, Stereo Impedance: 80kΩ Maximum Input Level: 40mW in 100Ω . Package List: 1 x Headphone Amplifier 1 x Instruction Manual 1 x Adapter