Features • N Female to SMA Female Compatibility: Designed specifically for seaml RF connections, ensuring optimal performance for your coaxial coax cable setup • Copper Construction: Crafted from copper, these connectors provide exceptional longevity and resistance to wear and tear • Reliable High-Performance: Enjoy wideband performance with a reliable RF adapter that ensures consistent signal transmission for your devices • Premium Materials for Longevity: Features electric gold plating and PTFE insulation, offering superior heat resistance and enhanced durability over time • Technical Specifications for Precision: Impedance of 50 ohms and a frequency range up to 6 GHz, delivering and effective connectivity for your home accories Features: 1、3 OUTPUT PORTS: After the microphone and music are amplified, they can be output separately or mixed. There are a total of three output ports, and the mixed output port can directly drive the headphones to listen. 2、ANTI INTERFERENCE: The amplifier is a stereo switch box, the signal is lossl, and the sturdy aluminum shell has strong anti interference. 3、MANY COMPATIBLE DEVICES: The 3.5mm interface of the amplifier can be used with electret and ordinary condenser microphones, and the 6.5mm interface is a dynamic microphone, which can amplify wired and wirel microphones. 4、GOOD O AMPLIFICATION: The amplifier can amplify the dynamic microphone 6.5 port by 75 times, the 3.5 port condenser microphone by 22 times, and the stereo music input 3.5 port by 5 times. 5、SMALL SIZE: The amplifier is small in size, easy to carry, and can be used for o amplification anytime, anywhere without hurting the sound quality. Specification: Item Type: Small Stereo o Preamplifier Material: ABS and Aluminum Dynamic Microphone: 6.5mm Condenser Microphone Interface: 3.5mm Power Supply: DC12V Power Connector: DC Approx. 5.5 x 2.1mm / 0.2 x 0.1in Package List: 1 x Small Stereo o Preamplifier 2 x o Cable Note: Please use a low ripple power supply, as the power supply is not good enough to cause buzzing Package List 1 x Small Stereo Audio Preamplifier 2 x Audio Cable