This ready assembled RFI filter is specifically designed to block this unwanted interference from entering your car sound system...Electronics > Circuit Boards & Components > Printed Circuit Boards > Development BoardsAS1097AS1097AS109711.95Quasar Electronics Limitedhttps://quasarelectronics.co.uk/Item/smart-kit-1097m-in-car-hi-fi-interference-suppressor-module
AS1097 - ASSEMBLED Car Interference Suppressor Module
The sound quality from even the most expensive, high-tech car sound system can be spoilt by radio frequency interference (RFI). Cars are notorious for producing high levels of RFI signals, originating from the ignition system, alternator, wipers, indicators, air conditioning, etc.
This pre-assembled RFI filter module is specifically designed to block this unwanted interference from entering your car sound system. It is very simple to install and small enough to fit almost anywhere inside the vehicle.