The Avantgarde Acoustic DUO SD is a refined two-way horn loudspeaker designed to deliver the core strengths of horn technology—speed, efficiency, and realism—within a versatile and room-friendly form factor. Utilizing spherical horns for the mid and high frequencies combined with an active bass system, the DUO SD offers a highly dynamic yet balanced presentation with excellent tonal coherence. Its controlled dispersion reduces room-induced coloration, resulting in precise imaging and a stable soundstage. The DUO SD is ideal for listeners seeking the unmistakable energy and immediacy of horn speakers while retaining a musically natural and engaging character suitable for a wide range of listening environments.