About ADD Powr

Pioneers in Signal Clarity and Energy Conditioning

For over three decades, ADD Powr LLC, formerly Coherence Systems, has led the development of advanced electrical energy conditioning and noise reduction technologies. Our specialty is in the improvement of electronic signal integrity across high-performance audio, video, and digital information systems.

The Origins of QRT: A New Standard in Power Conditioning

As the creators of Quantum Resonance Technology™ (QRT™), we helped define and develop the field of electrical environment conditioning. Early innovations-such as the Symphony and ElectraClear™-quickly earned acclaim for their ability to enhance audio fidelity and visual precision by boosting e-m (electro-magnetic) signals and reducing electronic noise.

Partnership with Nordost Corporation

In 2008, Quantum Inc. was acquired by Nordost Corporation, bringing our groundbreaking products and technology 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 Noise Reduction

At ADD Powr, our commitment is the continual innovation of technologies to improve the integrity and performance of electronic systems. We empower audio and video systems to achieve maximum clarity, realism, and dynamic range through expertly engineered solutions.