Features: The 4 Channel LED Headphone Amplifier delivers independent sound control with four isolated output channel, perfect for user monitoring or adjustments in collaborative environment. Featuring knobs, LED channel indicators, and metal construction, this amplifier ensuring clear sound reproduction operational for professional setups. Ideal for content creators requiring synchronized listener setups in studios or podcasting environment. Sound workflows in recording studios, live streaming, or home theaters where simultaneous monitoring and visual channel status is critical. Engineered with advanced technology and metal, this amplifier maintains signal integrity while enduring rigorous professional use. Specifications: Component:Metal Input parameters: Input port: 6.35mm; 3.5mm two, impedance: 100kQ, input level: +15dBu, power supply: type c 5V1A Output parameters: Output port: 6.35mm4, impedance: approx.80kQ, output level: approx.40mWin100Ω Size:Approx.109x61x30mm/109x61mm/4.29x2.4inch Package Includes: 1 Set Headphone amplifier note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.