Cambridge Audio Azur 851A Integrated Class XD Amplifier (black)

The ultimate in amplification and built without compromise, the 851 is our finest integrated amplifier. It possesses incredible power, finesse and astonishingly low distortion. In its design they assessed every component for sonic excellence and revised, reviewed and optimised the signal path for minimal distortion. Thousands of hours were spent testing and tweaking, the result is an amplifier like you’ve never heard before.


This product is also available in silver.


Special: CA$2,199.00

Reg.: CA$2,499.00

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ships within
3-5 days

Sound quality

Nothing prepares you for the sound quality of our 851A. Rated at 120 Watts per channel and built with a fastidious attention to detail, it presents your music with astounding depth and incredible clarity. The precision volume control provides remarkable stereo separation, while the overall effect is to give your music collection a new lease of life.

Connectivity

Cambridge Audio built the 851A without sonic compromise, and that’s true of the connectivity too. Nine RCA inputs cater for regular analog inputs, while for high-end components there are two sets of balanced XLR inputs. They’ve added a pre-out for connecting to a subwoofer or power amp, while two sets of speaker terminals allow for bi-wiring or running additional speakers in a second location. Finally, Control Bus inputs allow the linking of compatible Cambridge Audio products for easy control from one remote.

Class XD + two transformers

Rather than use Class A or Class AB amplifier designs, Cambridge Audio developed a novel and unique new design called Class XD, which combines the sonic purity of Class A and the efficiency of Class AB for the best possible result. 

The primary toroidal transformer provides unrestricted power to the dual mono amplification blocks. It’s a true audiophile transformer that will operate without distortion and with no buzz, interference or hum. While a second, smaller toroidal transformer takes care of pre-amplification processes. 

Features

- Class XD amplification designed to eliminate crossover distortion at low signal levels
- New balanced volume topology controllable in 1dB steps, giving very fine control, and superbly accurate channel balance
- Audiophile grade oversize toroidal transformer and substantial extruded heatsink allowing 2 x 120 Watts RMS into 8 Ohms or 2 x 200W into 4 ohms.
- Separate transformer taps for left and right channels, twin rectifiers and separate PSUs for dual mono operation of the left and right power amplifiers
- A separate toroidal transformer supplies the preamp making the 851A effectively a Pre and Power amp combination in one box
- AP5 protection technology for trouble-free operation
- Acoustically damped full metal chassis with thick brushed aluminum front panel
- Customizable front panel display
- Balanced and unbalanced analog audio inputs for superior connectivity
- RS232 controllable
- Eco-friendly <0.5W Standby power consumption

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