Genuine OEM Audi Antenna Amplifier, part number 8E5035225AF. This electronic module amplifies the signal received by the vehicle's antenna, ensuring clear and strong reception for audio systems. It is typically located within the vehicle's bodywork or near the antenna itself. The amplifier is a compact electronic circuit board designed for precise signal boosting. Genuine OEM amplifiers are calibrated for exact signal gain and frequency response, ensuring optimal performance and preventing interference.