Merging Technologies, the Swiss powerhouse behind the NADAC line, traces its roots to 1990 when Claude Cellier founded the company in Chexbres, near Lausanne. An electronics graduate from the Lausanne Institute of Technology, Cellier brought a decade of experience from Nagra Kudelski, the revered Swiss audio pioneer known for reel-to-reel recorders. From its inception, Merging specialized in digital signal processing, quickly pioneering DSD recording with the Pyramix Virtual Studio—one of the first systems to handle this format—and co-developing the DXD standard at 352.8kHz/24-bit alongside Philips for SACD production.
The NADAC brand emerged as Merging's audiophile extension, born from demands by the company's mastering and recording engineer clients for a consumer DAC mirroring their studio-grade Horus and Hapi converters. Launched in 2015 at the Munich High End show, NADAC focuses exclusively on high-resolution network-attached digital-to-analog converters, supporting DSD, DXD, immersive formats like Dolby Atmos and Auro-3D, and RAVENNA audio-over-IP networking for uncompressed, studio-transparent playback. No amplifiers, speakers, or other categories; it's a pure-play DAC system optimized for high-res enthusiasts.
Positioned firmly in the high-end niche, NADAC commands respect among discerning hi-fi buyers for delivering the uncolored transparency of professional mastering sessions at home. Backed by Swiss engineering precision and Merging's pro-audio pedigree—now under Sennheiser since 2022—it stands as a boutique reference for purity-obsessed listeners, outpacing mainstream rivals in resolution and soundstaging detail.