Bang & Olufsen Amplifier 1 Type 1689 power amp normally used with BeoLab 15 and 16 speaker systems. Fully operational and ready to go. Bang & Olufsen's Amplifier 1 is a home audio system designed to disappear into your home, but at the same time, its subtlety is what really makes the system an elegant showpiece. The speakers feature a completely silent, motorized tilt function that deploys when your play your music and carefully aims itself in the correct position to achieve just the right sound. The Amplifier 1 which has six separate amps rated at 2 x 150 watts that power a sub while giving another 150 watts for the midrange, and 45 watts for the tweeter Amplifier 1 contains six separate amplifiers. Two Class D units rated at 2 x 150 watts power up the subwoofer. Each BeoLab 15 gets 150 watts for the midrange, and 45 watts for the tweeter. Adaptive Bass Linearization keeps the deep bass cultivated and crisp all the way down to 45 Hz. NOTE: This system is desing for BeoLab 15, BeoLab 16 butt can be used on other Bang and Olufsen speakers.