Posted by Marc Martin on
URL: https://www.es-forum.com/reply-to-Paul-re-filtering-tp1541996p1541998.html

Hi all,

I was browsing the discussion forums on psaudio.com, the
manufacturer of the Noise Harvester. It says that this
device focuses primarily on reducing the noise in the
8-12 khz range, and that this indirectly reduces the
higher frequency harmonics that other filters
focus on. One filter is supposed to reduce the line
noise by 6dB in these frequencies, two by 9dB. They
noted that a competitor, the "Quiet Line" filter,
starts filtering at 220khz (this is one the models
I've tried before but gave me a headache very quickly).
Although in this case, "filtering" just means that
the noise is transferred from the hot wire to the
neutral wire.

They also noted that there is a 240v version of the
Noise Harvester, although I haven't seen where this
is sold.

This product appears to have been released in May
2006, so it's a new product (and is not being
marketed for your health, it's being marketed
for the audiophile crowd)

Marc