!±8±Cambridge Audio Azur 840Av2 Integrated Amplifier -silver
Brand : Cambridge AudioRate :
Price : $995.00
Post Date : Nov 30, 2011 07:40:30
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When the Azur 840A was introduced it broke the mould by introducing an entirely new class of amplifier design in the shape of Class XDTM and marked the zenith of Cambridge Audio's critically acclaimed Azur line-up. The 840A V2 now embraces the second generation of Cambridge Audio's patent pending proprietary technology and has employed some subtle but significant updates to improve upon this already outstanding design. 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 and a new more accurate volume control with even lower crosstalk for greater stereo imaging.At the core of the 840A's strength is a patent pending, Class XD (crossover displacement) technology 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.The Azur 840A amplifier includes a massive, oversized low flux toroidal transformer, incorporating a silicone-steel screen. To separate the delicate signals needed by the pre-amp from those needed by the power-amp, the 840A features a completely separate pre-amp toroidal transformer, mounted to the rear casework.
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