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Axign is a new company from The Netherlands, founded by former Philips and NXP employees who worked on the pioneering Class-D efforts. Established in 2014, their efforts have resulted in the development of the AX5689, a Class-D audio amplifier controller chip in a QFN package. The solution uses a digital control loop with feedback behind the output filter, across the loudspeaker terminals. It requires a digital input signal and suppresses all artifacts with a fifth order digital feedback loop. audioXpress visited the company to find out more information.