Feature: 1. PORTABLE DESIGN: The compact and lightweight headphone amplifier converter is convenient for users to carry around, allowing them to enjoy premium sound on the go, meeting travel needs. 2. DURABLE CONSTRUCTION: Constructed from sturdy and durable materials, the converter effectively prevents accidents such as drops and collisions, ensuring a long lifespan. 3. NO POWER REQUIRED: The headphone amp converter can be directly used by connecting to sound devices without the need for a power source. It offers simple, convenient, and quick operation. 4. SECURE CONNECTION: The XLR input features a locking mechanism to prevent accidental cable disconnection. Simply press the tab near to the installed connector at the bottom to release the cable. 5. VERSATILE COMPATIBILITY: Convert XLR interface to 3.5mm sound interface, allowing users to connect various sound devices with strong compatibility. Specification: Item Type: XLR to 3.5mm Headphone Volume Controller Material: Metal Application: 1. Before connecting, please adjust the volume of the headphones and the player to the minimum. 2. Connect the input plug of the headphone volume controller to the output of the player. 3. Connect the headphone plug to the output socket of the headphone volume controller. (If your headphones do not have a 3.5mm stereo mini plug, make sure to use the appropriate adapter.) 4. Adjust the volume of the player and the headphone volume controller to the appropriate settings to listen at the right volume. . Package List: 1 x XLR Adapter1 x Headphone Converter1 x English Chinese Manual