No description of the Project D-1 is complete without addressing its legendary sound. It is not a DAC that impresses through hyper-detailed, analytical precision. Instead, its magic lies in its masterful tonal balance and musicality.
Look at the rear of the D-1. You’ll see two IEC power cords. Yes, two. One power supply is dedicated solely to the digital circuitry and the data processing. The second isolated supply feeds the analog output stage. This galvanic isolation was decades ahead of the curve, preventing high-frequency digital noise from bleeding into the delicate analog signal.
Unlike clinical modern DACs (think ESS Sabre chips), the D-1 does not highlight the leading edge of transients. Cymbals don't "sizzle" with metallic grain; they breathe . The midrange is glorious. Vocals—especially Nora Jones, Frank Sinatra, or even vintage Miles Davis—have a palpability that modern $5,000 DACs often lack.
