Silenzio sheath current filters suppress hum and interference very effectively without the usual loss of signal quality. Interference due to sheath currents is caused by multiple earthing with different earth potentials, as is often unavoidable in
● TV/home cinema systems with cable connection,
● Community antenna systems (SAT and terrestrial),
● Home cinema systems with image projectors,
● HiFi systems with retrofitted active sub-woofer,
● HiFi systems with FM tuner or SAT receiver operated via cable connection or communal aerial.