“We prefer the D1′s sound via its optical input for its extra refinement, but the differences between the two aren’t massive. Fed a series of uncompressed and high resolution recordings (up to 24Bit/96kHz) the D1 delivers a tonally well balanced and informative sound. There’s a decent dose of dynamic thrust with the likes of Tinie Tempah’s Pass Out and an ability to unravel the busy production without spoiling the music’s message. Move to Tchaikovsky’s 1812 Overture and the Audioengine delivers a good dose of detail. It’s a refined sound without excess hardness, but with enough bite to satisfy.” —— whathifi.com