Audio Magic's Pulse Gen ZX is an active noise reduction device which neutralize RFI/EMI being generated inside the components. It's a small plastic box (1.75" x 2.75" x 1") that is to be soldered to a component's internal IEC connection or clip it with alligator clips. That means it goes inside whatever you want, in order to hear whatever it does.
List $400
$225 each
