Few of us may be old enough or confident enough to have started planning our 90th birthday, but Bang & Olufsen decided to celebrate its, in November 2015, in grand style, announcing what is unarguably the most technically ambitious high-end loudspeaker yet made, named (what else?) the BeoLab 90, priced £53,990 per pair. The bare statistics are stunning enough - 137kg, 18 drive units and 18 Class D power amplifiers per speaker, the last totalling 8.2kW of output capability. But what makes the BeoLab 90 really special - more than that, unique - is the internal digital signal processing that integrates those 18 drivers in such a way that this monumental polyhedron can deliver sound with a narrow, almost constant directivity across the entire audible frequency range.
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