Page 24 of Audio Catalog by Michael Percy Audio

power wraps goal to reduce noise in power cords from airborne rf and from conducted rf on the ac power line application power cords for audio cd dvd and sacd players transports and dacs power cords for preamps and amplifiers power cords for all home theater components goal to reduce the noise generated by electronics back into the ac line application power cords for video monitors tvs tuners and digital components power cords for fax machines computers peripherals and printers goal to reduce noise and brightness in cables carrying an audio or video signal application audio interconnects speaker wires and digital cables audio and video cables for home theater components video cables for computer monitors and tvs goal to reduce power line rf from other sources application power cords for refrigerators and air conditioners power cords for computers and computer monitors power wraps come in three sizes .375 diameter 12-inch long power wrap 21.95 .56 diameter 12-inch long power wrap 21.95 .328 diameter 6-inch long all clear 21.95/pair power wraps are a unique product that turn your standard power cord into a true high-end power cable power wraps are a very effective noise suppressor for all ac power cords they allow you to use the ac cords that the equipment manufacturer provides and still reduce the noise from the ac line to your electronics you can improve ac cords even if they are non-detachable one of the main entry points for noise and radio frequency interference rfi into an audio system is through the ac power lines filtering the audio frequency noise is generally handled in power supply filtering however the rf noise is harder to filter effectively power wraps use a patented rf absorber in a special configuration developed for use on ac cords the rf absorbers filter the rfi and kill the ringing in ac cords power wraps provide unique benefits that cannot be achieved any other way audiophiles try to correct for the sonic degradation of power line problems in a variety of ways with varying success power wraps strike right at the heart of the problem and also give the most cost-effective solution tuning the positioning of the power wrap along the power cord can optimize the performance of the power wrap the ac cord has several fundamental ringing modes and many harmonic ringing modes resonating all the time the position of the power wrap along the cable will determine which main modes and which harmonic modes are suppressed the modes and frequencies that are suppressed will determine the sonic signature of the ac cord the most important ac cords to tune are the cords on the digital transport and the d/a converter or the cd player there is a double benefit from suppressing noise in the digital equipment power wraps reduce the rf noise into the digital equipment and also reduce the digital noise fed back into the ac line the source equipment should always be the first to be tuned because once noise is introduced into the system it will propagate throughout the system the digital transport and turntable benefit greatly from noise suppression once the source is tuned add power wraps to the other components experiment for the best results power wraps also benefit audio and video interconnect cables they improve the performance of low and medium-priced cables for less than one would spend on a more expensive cable they are especially helpful on non-shielded cables the all clear version of power wraps has a smaller diameter which is more suited to interconnects power wraps are recommended for 3 to 7 foot power cords for ac power cord lengths over 7 foot use two power wraps per cord interleaved or end-to-end power wraps are recommended for digital cables due to the high level of digital noise on the cable all clears are recommended for 1 and 1.5 meter audio and video cables and power wraps for longer cables all clears come in sets of two so they can be used on separate left and right-channel electronics or so you can interleave them for more powerful rfi suppression both types may be intertwined or placed end-to-end on a cable to provide additional suppression.

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