Cambridge Audio Azur 851A Integrated Amplifier
Sound QualityNothing 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.
ConnectivityWe built the 851A without sonic compromise, and that’s true of the connectivity too. Nine RCA inputs cater for regular analogue inputs, while for high end components there are two sets of balanced XLR inputs. We’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 TransformersRather than use Class A or Class AB amplifier designs, we 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.
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 CAP5 protection technology for trouble free operation Acoustically damped full metal chassis with thick brushed aluminium front panel Customisable front panel display Balanced and unbalanced analogue audio inputs for superior connectivity RS232 controllable Eco-friendly <0.5W Standby power consumption Available in black and silver finishes
Power output: 120W RMS into 8 Ohms 200W RMS into 4 Ohms THD (unweighted): < 0.001% 1 kHz at 80% of rated power 0.01% 20 Hz - 20 kHz at 80% of rated power Audio inputs: 2 x balanced XLR, 8 x RCA inputs Audio outputs: Preamp output Record output Frequency response: 10 Hz - 50 kHz +/- 1 dB S/N ratio (ref 1w): > 93 dB (ref 1W/8 Ohm) Input impedance: Inputs 1 and 2 (balanced) 20 kOhm, Inputs 1-7 unbalanced 20 kOhm Rec Input 20 kOhm Power amp damping factor: > 110 at 1 kHz Max. power consumption: 800W Min. power consumption: Active (no signal) 70W Standby power consumption: Standby <0.5W Tone control: Shelving type Max bass boost/cut +/- 10 dB at 10 Hz Max treble boost/cut +/- 7.5 dB at 20 kHz Colour: Silver or black Dimensions (WxHxD): 430 x 115 x 385mm (16.9 x 4.5 x 15.2”) Weight: 15.0Kg (33lbs)