Devialet TechnologiesADH - Analog Digital Hybrid

Invented by Devialet, ADH® Intelligence is the world’s first hybrid amplification technology. An industry-defining invention, ADH® works by simultaneously harnessing all the linearity and refinement of Analog amplification (Class A) and all the power and compactness of Digital amplification (Class D). Operating in parallel, our patented hybrid amplification system dramatically enhances performance.

ADH® is a new hybrid amplification topology offering a modern and elegant synthesis that addresses the many constraints linked to audio amplification. It is the result of work aimed at, for example, improving the low energy efficiency performance levels of analog amplifiers, still massively adopted in the "high-end audio" industry, but long since abandoned in the professional audio, car audio and portable audio player sectors.

High-performance analog amplification comes at a cost: unreasonably high levels of energy dissipation.

The world’s first hybrid amplification technology delivers all the refinement of Analog amplification (Class A) with all the power and compactness of Digital amplification (Class D).

Based on the same principle as advanced driver assistance, the idea of ADH is to maintain the analogue amplifier's voltage generating function (to maintain their excellent audio performance levels), while entrusting the current generation function, and accordingly, that of generating power for the load, to an amplifier equipped with drastically superior energy efficiency: in this case a digital amplifier, otherwise known as a switch amplifier.

Thanks to our hybrid technology, the analog amplifier determines the load's output voltage, just as it would in any audio system, without having to provide the associated current. It therefore maintains the same performance levels for both no-load and on load operations, a unique feat. For peak performance, whatever the powel level. Amplification in a class of its own.