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The NS-50 uses a VCA together with a high speed envelope for noise detection instead of the filters that most noise supressors uses. The result is that noise is removed while removing less of the signal. The NS-50 has both stereo in and out. It has an effects loop and an indicator built up of 8 LEDs that shows the noise reduction level. The unit can be switched on or off through a remote jack and there’s a level switch on the back to chose the input level (+4dBm/-10dBm)