The 681 functions as a complete digital front end, translating digital sources into analog with precision. Its MiND 2 platform provides native access to TIDAL, Qobuz, Deezer, and Spotify, while the MDE1 digital engine and MHV hybrid volume control maintain signal purity. Six digital inputs, including HDMI ARC, AES/EBU, USB audio, optical, and coaxial, offer flexible connectivity. Balanced XLR and RCA outputs, combined with a fully balanced internal layout, minimize distortion and noise. A 4.3-inch color display presents album artwork and playback information with clarity, and the front panel controls are intentionally minimal.