Truly excellent speakers, a high-quality speaker set. High-end level. Class D ICE POWER AMPLIFIER. To really enjoy music at home, every tone from the deepest bass tone to the highest musical note are reproduced very clearly by these speakers. Wherever you are sitting or standing. Only then can music move you to tears or make you burst out laughing. The true music lover will recognise its sublime quality from the first note onwards. Due to the Acoustic Lens Technology, you will not miss a note. The sound is of the same quality throughout the room, whatever you are doing, wherever you are. The acoustic lens is mounted on seat height so you can embrace the music. The Acoustic Lens Technology ensures sound waves spread evenly. Built-in amplifiers and subwoofer. The speaker can be connected to all Bang & Olufsen BeoSound BeoMaster BeoVision audio, vision and link systems, and also to non-B&O systems. It can be used via line to wirelessly stream via Bluetooth or Wi-Fi internet from tablet of phone. It can also be connected to all TVs for a sublime sound experience. SPEAKERS ARE TRULY great and very neat, MINT CONDITION, see photos. EXCELLENT DESIGN AND SOUND. BEAUTIFUL COLOUR BLACK FOR THE ENTHUSIAST ICE POWER class D amplifiers 700 watts per speaker. SPECIFICATIONS: Power consumption 65W (IEC60065) 25W typical < 0.4W in standby Power amplifier, bass 500W, class D ICEpower Power amplifier, midrange 100W, class AB Power amplifier, treble 100W, class AB Long-term maximum output power per amplifier Bass: 400W/4ohm Midrange: 100W/6ohm Tweeter: 100W/8ohm Effective frequency range 28-29,000 Hz Crossover frequency 180/2000 Hz Cabinet principle Closed box. Net volume, bass 18 litres Net volume, midrange 4 litres Thermal protection of all drivers. ABL system protects the bass unit against mechanical damage. Power supply Automatic voltage adaptation 100-120Vac or 190-240Vac