What if the huge musical presence of an Avantgarde horn system could live inside the most compact speaker they have ever built? It does. Meet OPUS 1.

When you choose Avantgarde, you expect a horn system built to stand the test of time. Horn systems are, by nature, the most efficient and sustainable way to transform the energy of music into sound. Avantgarde follow the same principle in their engineering: the components that matter are crafted to last for decades, while fast-moving technologies like streamers remain external – easy to upgrade, and independent of the loudspeaker. Hand-built in the Odenwald, where things are still made with patience, intention, and a belief in durability, OPUS 1 becomes a long-term companion – engineered to perform far beyond ordinary product cycles.

OPUS 1 is the first Avantgarde system built around a single wide-band horn: a 13.8-inch spherical wave geometry capable of reproducing the entire critical midrange and high-frequency spectrum from 700 to 20,000 Hz, accompanied by a 10" bass driver. By concentrating the musical core into one horn, Avantgarde eliminate crossover transitions in the most sensitive bandwidth, resulting in seamless coherence, sharp transient response, and a presentation that feels alive, direct, effortless.

You want bass that’s clean, deep, and physical – the kind that turns sound into presence. That’s exactly what the OBM10 driver was created for. Its 10″ inverse natural-fiber-cone construction delivers speed and impact, the dedicated 250-watt amplifier provides authority, and the optimized port design keeps everything tight, tuneful, and room-friendly. This is low end – the Avantgarde way.