Floorstanding loudspeakers — Avantgarde Acoustic DUO SD

The DUO SD is a horn-loaded floorstanding loudspeaker from Avantgarde Acoustic, sharing the DUO GT's staggering sensitivity with a sophisticated triple-amplifier internal configuration. The DUO SD brings Avantgarde's most storied horn-loaded engineering heritage to a substantial floorstanding format.

Key specs that matter

Rated response spans 170Hz to 28,000Hz within plus-or-minus 3dB for the horn sections. Sensitivity is a staggering 107dB into a distinctive 18 ohm load, matching the DUO GT. Recommended external amplifier power spans a modest 10-100W. Internal amplification uses a sophisticated triple-section configuration totalling 100W plus 100W plus 500W, dedicated to different driver sections. At 67.0 x 155.2 x 65.2cm and 94kg, the DUO SD represents a somewhat more compact commitment than the DUO GT.

Sound and use context

Expect the immediate, dynamically alive character Avantgarde's legendary horn-loaded driver technology is broadly celebrated for, with the staggering 107dB sensitivity combined with the sophisticated triple-amplifier internal configuration providing dedicated power to each driver section.

Pairing

The modest 10-100W external amplifier requirement for the horn sections makes the DUO SD compatible with a wide range of amplifiers, including minimal single-ended triode designs, while the built-in triple-amplifier configuration handles bass reproduction directly.

Alternatives

Avantgarde's own DUO GT offers a related model with a single, more powerful built-in bass amplifier within the same broader catalogue.