"The new Cambridge Audio Azur 851W is impressive. I recently tried the 851W in my system and was really wowed by it."
Azur 851W
Power Amplifier
Delivering immense power and incredibly low distortion, the 851W power amplifier is perfectly matched to partner our 851E pre-amplifier and 851N network player; taking their pure signal and amplifying it with huge presence and authority.
"One of the most transparent, thrilling and richly rewarding amplifier combinations I have encountered."
- Andrew Everard, May 2014
Azur 851W
Power Amplifier
Delivering immense power and incredibly low distortion, the 851W power amplifier is perfectly matched to partner our 851E pre-amplifier and 851N network player; taking their pure signal and amplifying it with huge presence and authority.
"One of the most transparent, thrilling and richly rewarding amplifier combinations I have encountered."
- Andrew Everard, May 2014
Press reviews

The Idaho Statesman
United States,
"The new Cambridge Audio Azur 851W is impressive. I recently tried the 851W in my system and was really wowed by it."
Customer Reviews
The details
200W per channel into 8 Ohms 350W per channel into 4 Ohms
500W 8 Ohms 800W 4 Ohms
< 0.001% 1 kHz < 0.005% 20 Hz - 20 kHz
5Hz – 80kHz
>90dB (unweighted)
1.5V rms unbalanced 1.5 + 1.5V rms balanced
0.775V rms unbalanced 0.775V + 0.775V rms balanced
Balanced input 38 kOhm Unbalanced input 68 kOhm
> 110 at 1 kHz
2400W
Standby <0.5W
Black or silver
148 x 430 x 365mm (5.8 x 16.9 x 14.4”)
19.1kg (42.2lbs)
Azur 851W Power Amplifier, Power Cable, Control Bus Cable