HIGH-END SOUND QUALITY FOR SERIOUS ENTHUSIASTS – Audiophile level sound stage produced by the finest quality components. Features ribbon horn tweeters and 6.5in woofers that provide crisp, clear, natural sounding highs and powerful room-shaking bass that doesn't distort at higher volumes. DESIGNED BY PHIL JONES – Aesthetics and technical aspects designed by famed audio engineer, Phil Jones, to create a truly professional grade sound。 CORDLESS L/R SPEAKERS WITH AN ARRAY OF INPUT OPTIONS – Optical, Coaxial, Bluetooth 5.0 aptX, RCA, AUX, and USB Inputs。 BUILT-IN AMPLIFIER – These bookshelf speakers come in pairs. One has a built-in amplifier to be used with computers, TVs, record players and more. 2 YEAR WARRANTY - Guaranteed high quality and reliability with hassle-free parts and labor warranty for two years in USA and Canada. Dynamic Bookshelf Speaker - Hi-Res Audio Certified The A300PRO speakers consolidate the nature of a studio monitor and retro wood styling into a functioning bookshelf speaker. Associate the speakers to one another with the interfacing cable and associate the speaker to your sound source with the included RCA and optical cables cables. These speakers are sold in sets out of the case and incorporates a remote.