Headphone cable arrangement, filter assembly, and method of filtering signals in headphone cable arrangements

A pluggable filter assembly comprising:

• a first pluggable assembly connector matching with a headphone connector of a mobile electronic device, the pluggable filter assembly being to be connected to the headphone connector of the mobile electronic device via the first pluggable assembly connector;
• a second pluggable assembly connector that includes a plurality of contacts that provide contact to one or more signal wires of a headphone cable and at least one contact that provides contact to at least one reference line of the headphone cable, the pluggable filter assembly being to be connected to the connector of the headphone cable via the second pluggable assembly connector;
• an electronic filter configured to perform a filtering effective on at least one of the signal wires and the reference line of the headphone cable, wherein frequencies of a VHF radio band are passed and at least one frequency band below or above the VHF radio band is attenuated, the electronic filter being connected to the first and the second pluggable assembly connectors, the electronic filter being provided between the first and the second pluggable assembly connectors;
• and
• an assembly case housing the electronic filter and connections between the electronic filter and the first and the second pluggable assembly connectors.