The EP15A analyzes the fluctuating, distorted incoming AC power line, comparing it to its own internal "perfect" reference and uses Reserve Power™ to continuously correct the output AC waveform making up to 46 peak Amps available to feed your power-hungry equipment with 100% clean power.

Unlike other power products that restrict and suppress your A/V system, ExactPower's exclusive breakthrough technologies - such as, precise waveform regulation, voltage correction, and Reserve Power -, provide improvements that are unmatched by others in the industry. Only with ExactPower's composite source can your system reveal maximum dynamic range and clarity in detail and resolution. Another benefit of this technology is prolonged A/V equipment life as a result of eliminating damaging high or fluctuating voltage.

Reserve Power
Clean AC, lots of it. It's what your whole A/V system needs to perform at its full-spectrum, dynamic best. Certainly, at normal watching and listening levels, both audio and video (yes, video, too!) greatly benefit from clean, regulated power. But when the going gets tough during important dynamic peaks, your system will literally be strangled, gasping for power when enough is not available. This is ExactPower's distinguishing difference: enough current - a reserve of clean power - to handle peak amplifier loads, big-draw video displays, AND all the front-end power needs.By the nature of its unique design, the EP15A stores considerable reserve energy internally. Reserve energyis used to replace bad or the lack of full power coming out of your wall socket. This Reserve Power is used by the EP15A to correct two common deficiencies that cripple audio and video systems.

Problem 1: Big load on the output
For example, a large audio power amplifier may demand 45 amps of peak current. It is plugged into an outlet that is connected to the breaker panel by wires. When the amplifier demands current, these wires unavoidably create a voltage drop over their length. For a 15 amp branch circuit, Ohm’s law dictates that a peak current of 45 amps would produce a 18 volt drop! In other words, an outlet that measured 120 volts with no load would deliver only 102 volts under this brief overload condition. The EP15A uses its Reserve Power to satisfy the peak current demands of the amplifier, while correcting the peak voltage to its full value. Reserve Power effectively compensates for voltage drop from losses in the wiring allowing the power amplifier to deliver its full dynamic capability and to fill in the missing audio details.

Problem 2: Big load on the input
The second situation is a “transient” drop or “sag” in the incoming line voltage. These are most often caused by a heavy load elsewhere on the utility power distribution system, often inside your own building. A common example is the sag caused by the start-up of a refrigerator, washing machine, vacuum cleaner or other household appliance utilzing a large motor. These motors typically draw very high currents for a short time as they accelerate to operating speed. Due to voltage drop in premises wiring, lights in the house are often observed to dim briefly when this occurs. Sometimes the effect of such a “sag” can be noticed in other equipment, such as a brief shrinkage of the TV image or brief dropout in the audio. Under this condition, the EP15A uses Reserve Power to fill in the sag, supplying constant and undisturbed output power. In fact, when such sags are severe, the unit can supply over 7,000 watts of power for 10ms (over half a cycle at 60Hz) and 5,000 watts for a full cycle at 60Hz. The reserve energy is sufficient to supply its full 1,500 watts rated output for 50ms or 3 full cycles at 60Hz. Even longer term sags or “brownouts” can be corrected as long as the incoming voltage doesn’t fall below 90 volts.

Feed Forward
One of the technologies used to make the EP15A's voltage regulation work effectively is "feedforward" - an improvement on feedback that you may be familiar with in amplifiers. In order to reduce distortion in the output signal, most amplifiers employ some degree of feedback. Essentially, a wave from the output of the amplifier is run back to a "comparator" circuit that compares the output waveform to the input waveform. If there is a difference, an instantaneous correction is applied to the input side of the amplifier. Read More about FeedForward >>

Specifications for the ExactPower EP15A