At the Munich High End 2019 trade show, currently underway in Munich, Germany, NAD Electronics announced that it will be the first international brand to incorporate and launch PURIFI's new patent-pending class-D technology into its product family.
The amplifier circuit, known as Eigentakt (meaning "self-clocking"), is the result of years of research by PURIFI into the self-oscillation behaviours in class-D amplifiers with algorithms that, when applied in control loops, improve existing designs by an order of magnitude or more.
The agreement will see the two companies cooperate to adapt the Eigentakt circuit to NAD's signature design requirements, with the intent to create a new amplifier platform for future, yet-to-be-announced products from NAD.
"The Eigentakt technology is unique," says Bruno Putzeys, Co-Founder at PURIFI Audio. "Amplifiers carrying the technology will be exceedingly indifferent to speaker load, volume level, and signal content, resulting in negligible THD and IMD levels, and will feature exceptionally clean clipping."
According to measurements by PURIFI, the Eigentakt circuit is expected to outperform any audio amplifier known, regardless of technology or class, with THD and IMD quoted as below 0.00017% at all frequencies and power levels, and the frequency response in the audio band remains within +/- 0.01 dB under all load conditions. It also represents one of the first products to be commercialized by PURIFI, which was founded in 2014 by industry veterans and renowned audio experts Putzeys, Lars Risbo, and Peter Lyngdorf.
"Our NAD design team, led by Greg Stidsen, Taresh Vadgama, and including the late Bjorn Erik Edvardsen, have maintained a close working relationship with Bruno, Lars, and Peter over the Years," says Gordon Simmonds, CEO of Pickering, ON-based Lenbrook Group, owners of NAD Electronics as well as other high-fidelity audio brands, Bluesound wireless multi-room and PSB Speakers. "Clearly we all share the same commitment to audio excellence so NAD is pleased and proud to be at the forefront of adopting PURIFI's class-leading technology.
"Our teams," Simmonds continues, "are already fully engaged in the process of developing a next generation amplifier platform that will feature this circuitry, keeping NAD and our other brands at the forefront of audio technology as it begins to weave into our product roadmap."
"I have personally been involved with NAD Electronics and have known the Lenbrook team for 40 years," adds Lyngdorf, Co-Founder and Chairman of PURIFI. "NAD is the perfect collaboration partner for this new technology, and we look forward to their implementation, as we are sure it will propel the industry's expectations for high-fidelity amplifiers."