a QSE with string so that it rests above the area where
cds play in my machine. This way, I have the advantage of
its magnetic influence without the consequences of the QSE
coming in contact with the player (which affects the sound
in a different way). In other applications, the contact is fine, too,
like on top of the ends of power cords, interconnects, and speaker
cables.
Also, try the QSE under a piece of electronics. And, try resting a
cd on a QSE (switching sides after 15 seconds) before playing it.
Can you hear a difference, this way? I also use a Walker
Talisman before every single play...