Features: Experience clear sound with our CD2399 dynamic microphone amplifier board featuring a high clear amplification circuit and integrated electret condenser reverberation module for professional sound reproduction. This PCB construction incorporates premium circuitry materials ensuring durability and stability, while its simplified design enables effortless assembly without tool. Ideal for sound enthusiasts, hobbyists, and beginners seeking reliability components for projects or professional sound engineering applications. Perfectly suited for diverse environments including music recording studios, live performances, home karaoke setups, and online streaming requiring rich vocal effects. Enjoy seamless integration across various sound systems with its plug and play compatibility, making it essential for educational institutions, project studios, and multimedia production facilities. Specifications: Component: circuit board Size:Approx.100x50mm/3.93x1.96inch Power Supply:AC6V-17V DC12V-24V Hole Diameter:3.5mm Spacing:22mm Features: Uses CD2399 chip, supports dynamic microphone amplification, built-in electret microphone reverberation function, provides quality sound processing effects Suitable for sound equipment developers, electronics enthusiasts and professional sound engineers Package Includes: 1pc Microphone Amplifier Board note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.