AR Hi-RES series bookshelf loudspeakers utilize the identical components of their big brothers -- plasma transferred, diamond hardened titanium tweeters, MagAlloy midrange drivers, and handsome, well crafted enclosures. As a result of this design philosophy, Hi-RES series bookshelf loudspeakers are truly audiophile performers, capable of extended range and a level of detail resolution that totally defy their size and price.