Cambridge Audio Azur 851A | Black Flagship Integrated Amplifier

    Three Amps In OneNo Transformer Noise, Buzz Or HumHigh Quality Power OutputSensational Bass PerformanceNew Improved Precision Volume Control


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Details & Highlights

Product Highlights

    The pinnacle of amplifier technology, the Cambridge Audio Azur 851A Flagship Integrated class XD amplifier houses incredible power and exceptionally low distortion. 120 Watts per channel produces music with detail, depth and undeniable clarity, supported by precision controls designed to produce stunning stereo separation. 9 RCA inputs, 2 sets of balanced XLR inputs, a pre–out for subwoofer connection or power amp, and 2 sets of speaker terminals for bi–wiring or additional speakers. Taking advantage of the sonic brilliance and purity of a Class A design without overheating, and the efficiency of a Class AB design without sonic limits, Cambridge Audio patented their Class XD technology designed to harness the best of both worlds with all of the advantages and none of the disadvantages. The 851A is perfectly calibrated to flawlessly match other components in the Azur 851 series like the 851W power amplifier and 851N network player.

Details from Cambridge Audio

    Azur 851A Flagship Integrated Class XD Amplifier

    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 we 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.

    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.


    We built the 851A without sonic compromise, and that’s true of the connectivity too. Eight 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 Transformers

    Rather 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. For more information on toroidal transformers and why we use them view the videos below.


Features & Specs

Best Seller
Manufacturer's Warranty
    1 Year Parts / 1 Year Labor -Carry In Service
Detailed Specifications
    Manufacturer Specifications
  • Color: Black
  • 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: Record Output
  • Frequency Response: 10Hz–50kHz
  • 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
  • Power Consumption
  • Max Consumption: 800W
  • Min Consumption: 70W
  • Standby Consumption: 0.5W
  • Dimensions
  • Width: 16.9"
  • Height: 4.5"
  • Depth: 15.2"
  • Weight: 33 lbs
Product Bullets
    Three Amps In OneNo Transformer Noise, Buzz Or HumHigh Quality Power OutputSensational Bass PerformanceNew Improved Precision Volume Control


Included Coverage from Cambridge Audio: 1 Year Parts / 1 Year Labor -Carry In Service

Category ID: 158 | $1,699.99