The Lehle DC Filter eliminates DC voltage from analog signals. Audio
signals containing DC voltage cause ugly switching noise. Now, both line
and high-impedance signals are cleaned - but with no loss of sound.
The DC Filter is of full stereo type, and thus filters stereo - and, of
course, mono - signals. This little aid can even process balanced
signals. The Lehle DC Filter is a passive filter, so it needs no power
supply.