Zeal,
They are installed by the manufacturer near the connectors.
Plug them in just like any other XLR or RCA cable. In the picture the HFTN's are in the black shrink wrap attached to RCA jacks.
http://www.audiocircle.com/index.php?action=gallery;image=61420
They are installed by the manufacturer near the connectors.
Plug them in just like any other XLR or RCA cable. In the picture the HFTN's are in the black shrink wrap attached to RCA jacks.
http://www.audiocircle.com/index.php?action=gallery;image=61420