When connecting audio devices to a car radio such as a mobile phone or MP3 player, unwanted noise often occurs, which are noticeable due to humming, (hum loop, ground loop) noise or whistles. This is caused by different mass potentials, which can occur, for example, when charging the mobile phone at the same time. (Adapter has no charging function) This audio filter can also be used with home stereo systems because sound interference and hum are caused by the power supply connection of the Schuko plug. For example, Hifi system, PC, TV, computer, notebook, active boxes (speakers). This NF interference filter can completely eliminate or significantly reduce most of these noise. This NF filter has a high-quality transformer (isolating transformer, power supply) with galvanic isolation. It can be connected to any audio connection with 3.5 mm jack socket with the available connection cable with 3.5 mm jack plug simply plug and play. The audio signal is transmitted cleanly and promotes interference-free listening pleasure. Due to its compact mass, it can be easily stowed away. Dimensions: 6 cm x 2 cm x 2 cm. Frequency range: 20 - 33000 Hz, transmission ratio: 1: 1 distortion: less than 0.001%.
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