Avantguarde speakers are gigantic and often candy-colored horn speakers feature gigantic round flanges. They are the visual definition of why a wife might file for divorce about a pair of loudspeakers.
Avantgarde's horn drivers were very efficient, thus audiophiles would match them with low-powered single ended tube amps (SETs) for the "hot setup."
The Avantgarde Trio Classico, for example, is 61 inches tall, has a claimed sensitivity of 109 dB, and a frequency range of 100 Hz to 20 kHz. The Avantgarde Duo Primo is 71 inches tall, has a claimed frequency response of 170 Hz to 20 kHz and a sensitivity of 107 dB. The enormous Avantgarde Basshorn subwoofer is 80 inches wide, 90 inches tall, and weighs nearly 1200 pounds. It is claimed to produce down to 18 Hz.
You may once again purchase Avantgarde products in the US through www.avantgarde-acoustic.com.