Product Description: High Impedance Amplifier - Professional Hi-Z Amplifier for Software Defined Radio and Loop Antennae Application: This high resistance amplifier serves as an essential impedance conversion device, transforming higher impedance to a standard 50 ohm output impedance. It plays a crucial role in impedance matching and isolation, making it ideal for passive antenna reception matching. It is perfectly suited for donut resonance antennae, tie rod antennae, whip antennae, magnetic rod antennae, and more. Parameters: Designed with precision, this high resistance amplifier features an input impedance of 1MΩ and an output impedance of 50Ω. It offers a gain of 0dB and a bandwidth of 300MHz. Equipped with a built-in 600mAh lithium-ion battery, it ensures extended usage time, making it reliable for long-term applications. Compatible: Versatility is at the core of this amplifier's design. It is compatible with any radio receiver, including those used for Software Defined Radio. It works seamlessly with malachite, small loop antennae, donut antennae, mini loops, radio antennae, tuning loops, and various other models, providing a broad range of applications. Enhanced Performance: The amplifier's higher input impedance allows it to capture maximum energy from the input antennae, significantly reducing signal energy loss caused by unstable impedance. This feature greatly enhances reception performance, ensuring clear and strong signal quality. High Impedance: The amplifier is designed to connect directly to LC resonance antennae, which also generate high impedance. This direct connection allows it to draw energy efficiently from resonance antennae, achieving higher gain and superior frequency selection characteristics. It is particularly effective with LC resonance antennas, including donut antennas and magnetic bar antennas. Elevate your radio reception capabilities with this high impedance amplifier, engineered for superior performance and compatibility across a wide range of antennae and radio systems. Whether for professional or personal use, this amplifier ensures optimal signal clarity and strength.