The Bose Bravura is an older, vintage Bose speaker series that was popular in the 1980s and 1990s. These passive hi-fi speakers were tested at the time with Bose's Syncom computer system for quality control. Important features of the Bose Bravura Models: The series consists of different variants, including the compact Bravura Model 1, the larger Bravura 3, and variants with dual woofers. Technique speaker : Sensitivity: With a relatively low sensitivity of around 85 dB, these speakers need a stable amplifier to do well. Amplifier choice: Although they already play on a light 2x20 watt amplifier, they perform more dynamically with a more powerful vintage or modern receiver. All pictures are original of this lot and part of description!