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"Extraordinary array of features; refined and revealing sound that puts musicians in the room... Smooth, svelte sounding amp with power."Hi-Fi Choice magazine.
Class XD amplifier design
What makes this amplifier very special is the Class XD amplification. This combines the best qualities of Class A amplification - smoothness and realism - with the best from Class B - power and control, without the disadvantages inherent with many Class AB designs. What you'll hear is a smooth, yet detailed sound quality with the ability to drive almost any speaker and a substantial power output.
Massive toroidal power supply
At its heart, the 851A is powered by a massive toroidal power supply, which accounts for a third of its the weight. Not surprisingly the 851A has a monster power output: 2 x 120W into an 8 ohms and an awesome 2 x 200 watts into a 4 ohms. What this means in terms of sound quality is deep, effortless bass. Furthermore, such is the control and current that the 851A handles tricky dynamic sections, such as the sweep of a full orchestra with consummate ease.
Power with control
The 851A can do subtle, too. By using a separate toroidal power supply for the pre-amp section, the 851A ensures that pre-amplified signals arrive at the power amp stage in the best condition possible and so are brimming with subtle detail. Short of having a separate pre/power amp combo, this separate power supply is the next best thing.
Dual mono configuration
With separate taps for the left and right channel from the power supply, and separate left and right amplifier circuits, the 851A is a true dual mono amplifier. By having separate circuits for the left and right channels, each channel has its own, distortion-free feed. This brings about greater separation between instruments, greater width of sound and enhanced realism.
Plenty of connections
With no fewer than eight audio inputs, the 851A is capable enough to handle even the most complex of systems. XLR balanced connections offer a professional-grade connection with compatible equipment, such as the 851C CD player and Stream Magic 6 network player. Fixed level inputs make it easy to use the Azur 851A as the front amplification as part of a home cinema system, while the large display can be programmed to name your sources, so that, for example, the PlayStation 3 input is labeled, 'PS3' rather than 'Aux 3'.
Full metal casing
Using a full metal casing with rounded edges, doesn't just look and feel good, it helps the sound, too. The case is rigid and well damped, so it won't resonance unhelpfully. The thick aluminium front panel looks the part and also acts as a shield against electrical interference from sources such as dimmers and RF devices. All these details combine to create an amplifier that not only looks stylish but also offers exceptional resistance to both mechanical and electrical interference.
To experience music more vividly than ever before, the Cambridge Audio Azur 851A provides your front row seat.