Cambridge Audio Azur 840A (V1) Integrated Amplifier - Consignment
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Cambridge Audio Azur 840A (V1) Integrated Amplifier - Consignment
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Cambridge Audio Azur 840A (V1) Integrated Amplifier - Consignment
Condition: Good (Left LED on screen not working) some marks on top
Includes: Cambridge Remote
SN: YN840A-S 0603 0013
Overview
The 840A is a multi award-winning amplifier the Class XD technology for unbeatable sound reproduction. Revised balanced inputs for lower distortion and noise and a more accurate volume control with even lower crosstalk for greater stereo imaging.
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. In addition to this innovative technology, the 840A also uses an extremely sophisticated resistor ladder / relay attenuator with gold-plated contacts for volume and balance control. This gives extremely low distortion with superb channel balance and incredibly accurate control in 1dB steps over the whole range.
Relays are also used for all input switching, more normally associated with designs costing many times that of the 840A, these components deliver extremely high isolation between inputs, whilst remaining completely free from the distortion associated with conventional semiconductor switching.
In the ongoing development of Class XD, Cambridge have conducted exhaustive research into further improvements of their amplifier designs to squeeze everything out of this innovative technique. This in turn led to a new output stage topology being developed which has been incorporated into the version 2 of the 840A. Two pairs of very high current output transistors are used per channel (for the amplifier output) plus an extra high current transistor per channel for the XD circuit.
Specifications
Power output: 120 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 50kHz
Total harmonic distortion: 0.015%
Damping factor: 110
Signal to noise ratio: 83dB (line)
Dimensions: 430 x 115 x 385mm
Weight: 15kg
Year: 2006