Resonessence Labs Concero HD Digital to Analog Converter

HD = DXD/DSD
Way back when I reviewed the Resonessence Labs Concero (see review), I wondered/wished, "I wonder if they could easily add DSD capabilities to the Concero?" Depending on your definition of "easy", the answer is a resounding yes. It did take a new DAC chip but ESS came to the rescue and the little Concero now has two siblings; the HD with its DXD/DSD capabilities and the HP which adds a headphone amp to the HD. Like the original Concero, the HD in addition to functioning as a Coax S/PDIF and USB DXD/DSD DAC, it can also operate as a USB to S/PDIF converter handling up to 64x DSD since 128x DSD is beyond the S/PDIF specifications according to Resonessence Labs.