Genuine OEM Volkswagen Antenna Amplifier, part number 7T0035577C. This electronic component is designed to boost the signal strength received by the vehicle's antenna, improving the clarity and reception quality of radio, navigation, and other communication systems. It is typically located near the antenna assembly. Weighing approximately 0.055 kg, this compact unit is crucial for optimal infotainment performance. Using a genuine OEM antenna amplifier ensures correct signal processing, impedance matching, and compatibility with the vehicle's electrical architecture, preventing signal degradation and interference.