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Power Amplifiers : Cambridge Audio Azur 840W Power Amplifier Cambridge Audio has taken the Azur 840 series to its peak with the introduction of two new models – the 840E pre-amplifier and 840W power amplifier. The 840W is a high-end power amplifier that has been designed by the same team behind the 840A and uses an evolution of Cambridge Audio’s hugely innovative Class XD™ technology for a highly detailed naturally musical performance. The second generation Class XD is now complemented by a new output stage carefully adjusted to integrate with this novel technology, revised balanced inputs for lower distortion and noise. An awesome 200W @ 8 Ohms gives excellent load driving ability or, a truly massive 500W bridged mono can be harnessed for even ‘difficult’ high-end speakers. At the core of the 840W’s strength is a patent pending, Class XD (crossover displacement) technology (first seen in the 840A) and which has been subtly revised following continuing post-launch development and critical evaluation. This unique design gives pure Class A operation at low levels, moving smoothly into an enhanced version of Class B at higher levels. This system should not be confused with Class AB, which inherently generates greater distortion at high levels than a pure Class B design. XD technology feeds a controlled current into the output stage actively displacing the crossover point in a new way so that the usual Class B crossover point no longer occurs at zero volume - the worst possible position in terms of distortion – but at a significant output level. The result is a smooth and linear transition between the two modes of operation, which differs significantly from the abrupt, gain transition of a Class AB amplifier. To facilitate this, the Azur 840W amplifier includes a massive, oversized low flux toroidal transformer, incorporating a silicone-steel screen. This item is only available to our South Florida customers at our West Palm Beach showroom. No internet / mail order sales unless otherwise indicated.     ID: 840W Visit our showroom or  Email   us about this item! $2,395.00