Cambridge AudioAzur 851AIntegrated

Cambridge Audio Azur 851A Integrated Amplifier

The Cambridge Audio Azur 851A is a premium Class XD integrated amplifier delivering 120 Watts per channel with exceptional clarity, power, and ultra-low distortion. Ideal for audiophiles seeking superior sound quality and versatile connectivity, it revitalises your music collection with rich, immersive audio.

Key Features

• 120W RMS power output into 8 Ohms, 200W RMS into 4 Ohms
• Class XD amplifier technology combining Class A purity and Class AB efficiency
• Dual toroidal transformers for distortion-free power and pre-amplification
• 9 analogue inputs including 2 balanced XLR inputs for high-end components
• Preamp output and record output for flexible system integration
• Two sets of speaker terminals for bi-wiring or multi-room setups
• Control Bus inputs for linking compatible Cambridge Audio products
• Precision volume control for remarkable stereo separation and clarity

Sound Quality

The 851A offers astounding depth and clarity with meticulous attention to detail. Its precision volume control ensures remarkable stereo separation, delivering a rich and immersive listening experience.

Connectivity

Featuring nine RCA inputs and two balanced XLR inputs, the 851A supports a wide range of analogue sources. It includes a preamp output for connecting subwoofers or power amplifiers, plus two sets of speaker terminals for bi-wiring or additional speakers in a second location. Control Bus inputs enable seamless control with other Cambridge Audio devices.

Class XD and Dual Transformers

The patented Class XD design combines the sonic purity of Class A with the efficiency of Class AB amplifiers. The primary toroidal transformer powers the dual mono amplification blocks without distortion, buzz, interference, or hum. A secondary toroidal transformer handles pre-amplification processes, ensuring clean and stable performance.

Specifications

• Power Output: 120W RMS into 8 Ohms, 200W RMS into 4 Ohms
• Total Harmonic Distortion (THD): < 0.001% at 1 kHz (80% rated power), 0.01% 20 Hz - 20 kHz (80% 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
• Signal-to-Noise Ratio (S/N): > 93 dB (ref 1W/8 Ohm)
• Input Impedance: Balanced inputs 20 kΩ, Unbalanced inputs 20 kΩ, Record input 20 kΩ
• Power Amp Damping Factor: > 110 at 1 kHz
• Maximum Power Consumption: 800W
• Minimum Power Consumption (Active, no signal): 70W
• Standby Power Consumption: < 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 Options: Silver or Black
• Dimensions (W x H x D): 430 x 115 x 385 mm (16.9 x 4.5 x 15.2 inches)
• Weight: 15.0 kg (33 lbs)