Abstract: An apparatus and method for amplifying low amplitude vibrations from stringed instruments, and in particular guitars while reducing Gaussian and 60 Hz hum noise from the signal. In particular, the invention incorporates the use of one or more bipolar magnets in conjunction with high precision differential amplifiers and a power source. The bipolar magnets may be arranged at varying locations on the guitar as long as they are within range to induce an electrical signal in the strings when they are played. The signal is then fed through the amplifier circuitry whereby noise is eliminated and then played through a standard speaker.

Abstract: The present invention is an apparatus that prevents crawling insects such as ants from infesting a pet food dish. The invention accomplishes this task without the use of any chemical pesticides, bait or electronics. The apparatus prevents the ants from detecting the smell of pet food by preventing the smell from reaching a critical portion of the path from the food source, to the ground. The apparatus may also be configured to attach to the bottom of table legs such as those used at a picnic or other outdoor gathering.