About Coherence Systems

Pioneers in Signal Clarity and Energy Conditioning

For over three decades, Coherence Systems has led the development of advanced energy conditioning and signal enhancement technologies. We specialize in improving electronic signal clarity across high-performance audio, video, and digital systems.

The Origins of QRT: A New Standard in Power Conditioning

As the creators of Quantum Resonance Technology (QRT), we helped define the field of electrical environment conditioning. Our early innovations—such as the Symphony and ElectraClear—quickly earned acclaim for their ability to enhance audio fidelity and visual precision by harmonizing EMF signals and reducing electronic noise.

Partnership with Nordost Corporation

In 2008, QRT technology was acquired by Nordost Corporation, bringing our groundbreaking products to a global audience. This partnership solidified QRT’s reputation as a leader in high-end power conditioning and system optimization.

The Rise of ADD-Powr™: Next-Generation Signal Boosting

Building on QRT’s legacy, we introduced ADD-Powr™ (Algorithm Digital Defined Power)—a new line of innovative products for both consumer and professional AV markets. These tools deliver exceptional noise reduction and signal boosting, transforming how systems perform and sound.

Our Mission: Advancing the Science of Coherence

At Coherence Systems, our commitment is to continual innovation in signal integrity and system enhancement. We empower audio and video systems to achieve maximum clarity, realism, and dynamic range through expertly engineered solutions.