Feature: 1. 【High-Quality Sound】: Our 4-channel stereo headphone amplifier delivers clear and clean sound with a wide dynamic range. The ultra-low noise 4580 operational amplifier ensures superior audio performance, providing the same level of amplification as full-size audio equipment. Even at high volumes, you can expect the best sound quality. 2. 【Individual Volume Control】: Each channel of this headphone amplifier has its own volume control. This allows each listener in the recording studio to adjust their own volume while listening to the main mix, ensuring a personalized and comfortable listening experience. 3. 【Versatile Compatibility】: This 4-channel stereo headphone amplifier is compatible with all models of headphones. It features a 6.35mm stereo jack input and four outputs with 6.35mm stereo jacks, making it a versatile choice for both recording studios and stages. 4. 【Durable and Compact】: Encased in a sturdy metal shell, this headphone amplifier is designed to withstand the rigors of stage and studio use. Its compact size makes it easy to integrate into any audio setup, while its powerful stereo amplifiers deliver excellent performance at any volume. 5. 【Powerful Amplification】: Equipped with four high-power stereo amplifiers, this headphone amplifier can handle up to four headphones at once. It comes with a 12-volt DC power adapter, ensuring reliable and consistent performance. With the stereo amplifier, you can maintain the highest sound quality even at maximum volume. Specification: Input: 6.35mm stereo Input Impedance: 100 ohms Output: 6.35mm stereo Output Impedance: 80 ohms Power Supply: DC 12V power center is negative Power Adapter: US Plug, EU Plug (optional) Product Size: 10.5 * 5.9 * 3.2cm/4.1 * 2.3 * 1.3inch Package List: 1 * Headphone Amplifier1 * Power Adapter