A-M Systems is proud to offer to our customers another high quality instrument designed to improve electrophysiological recordings at an affordable price: The HumBug Noise Eliminator from Quest Scientific. The ‘HumBug’ Line Noise Eliminator removes line frequency noise from electrophysiological signals without filtering or requiring ongoing user attention. That means more time getting results, and less time solving continuously evolving noise and ground loop problems. The Humbug has been used successfully in neurophysiology laboratories worldwide.  For a short time, receive free ground shipping on any Humbug sold and shipped to an address in the continental United States or Canada.