Cambridge Audio AZUR 851A Stereo Amplifier

Cambridge Audio AZUR 851A (Silver)

Stereo Amplifier

Out of stock
Get £250 off with voucher code SALE250 *
£1,399
"Extraordinary array of features; refined and revealing sound that puts musicians in the room... Smooth, svelte sounding amp with power."Hi-Fi Choice magazine.

Class XD amplifier design

What makes this amplifier very special is the Class XD amplification. This combines the best qualities of Class A amplification - smoothness and realism - with the best from Class B - power and control, without the disadvantages inherent with many Class AB designs. What you'll hear is a smooth, yet detailed sound quality with the ability to drive almost any speaker and a substantial power output.

Massive toroidal power supply
At its heart, the 851A is powered by a massive toroidal power supply, which accounts for a third of its the weight. Not surprisingly the 851A has a monster power output: 2 x 120W into an 8 ohms and an awesome 2 x 200 watts into a 4 ohms. What this means in terms of sound quality is deep, effortless bass. Furthermore, such is the control and current that the 851A handles tricky dynamic sections, such as the sweep of a full orchestra with consummate ease.

Power with control
The 851A can do subtle, too. By using a separate toroidal power supply for the pre-amp section, the 851A ensures that pre-amplified signals arrive at the power amp stage in the best condition possible and so are brimming with subtle detail. Short of having a separate pre/power amp combo, this separate power supply is the next best thing.

Dual mono configuration
With separate taps for the left and right channel from the power supply, and separate left and right amplifier circuits, the 851A is a true dual mono amplifier. By having separate circuits for the left and right channels, each channel has its own, distortion-free feed. This brings about greater separation between instruments, greater width of sound and enhanced realism.

Plenty of connections
With no fewer than eight audio inputs, the 851A is capable enough to handle even the most complex of systems. XLR balanced connections offer a professional-grade connection with compatible equipment, such as the 851C CD player and Stream Magic 6 network player. Fixed level inputs make it easy to use the Azur 851A as the front amplification as part of a home cinema system, while the large display can be programmed to name your sources, so that, for example, the PlayStation 3 input is labeled, 'PS3' rather than 'Aux 3'.

Full metal casing
Using a full metal casing with rounded edges, doesn't just look and feel good, it helps the sound, too. The case is rigid and well damped, so it won't resonance unhelpfully. The thick aluminium front panel looks the part and also acts as a shield against electrical interference from sources such as dimmers and RF devices. All these details combine to create an amplifier that not only looks stylish but also offers exceptional resistance to both mechanical and electrical interference.

To experience music more vividly than ever before, the Cambridge Audio Azur 851A provides your front row seat.

6 Year Supercare £139.85

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more

 Disabled assistance

Richer Sounds are happy to offer FREE delivery* on the vast majority of our products to blind, partially sighted and disabled customers. (*see our delivery page for T&Cs.)

Please place orders online, then contact webaftersales@richersounds.com who will advise on how to arrange the refund of your delivery charge.
* Get a further £250 off the marked price of this Stereo Amplifier with voucher code SALE250. Offer available in-store, online or via telesales.

"Extraordinary array of features; refined and revealing sound that puts musicians in the room... Smooth, svelte sounding amp with power."Hi-Fi Choice magazine.

Class XD amplifier design

What makes this amplifier very special is the Class XD amplification. This combines the best qualities of Class A amplification - smoothness and realism - with the best from Class B - power and control, without the disadvantages inherent with many Class AB designs. What you'll hear is a smooth, yet detailed sound quality with the ability to drive almost any speaker and a substantial power output.

Massive toroidal power supply
At its heart, the 851A is powered by a massive toroidal power supply, which accounts for a third of its the weight. Not surprisingly the 851A has a monster power output: 2 x 120W into an 8 ohms and an awesome 2 x 200 watts into a 4 ohms. What this means in terms of sound quality is deep, effortless bass. Furthermore, such is the control and current that the 851A handles tricky dynamic sections, such as the sweep of a full orchestra with consummate ease.

Power with control
The 851A can do subtle, too. By using a separate toroidal power supply for the pre-amp section, the 851A ensures that pre-amplified signals arrive at the power amp stage in the best condition possible and so are brimming with subtle detail. Short of having a separate pre/power amp combo, this separate power supply is the next best thing.

Dual mono configuration
With separate taps for the left and right channel from the power supply, and separate left and right amplifier circuits, the 851A is a true dual mono amplifier. By having separate circuits for the left and right channels, each channel has its own, distortion-free feed. This brings about greater separation between instruments, greater width of sound and enhanced realism.

Plenty of connections
With no fewer than eight audio inputs, the 851A is capable enough to handle even the most complex of systems. XLR balanced connections offer a professional-grade connection with compatible equipment, such as the 851C CD player and Stream Magic 6 network player. Fixed level inputs make it easy to use the Azur 851A as the front amplification as part of a home cinema system, while the large display can be programmed to name your sources, so that, for example, the PlayStation 3 input is labeled, 'PS3' rather than 'Aux 3'.

Full metal casing
Using a full metal casing with rounded edges, doesn't just look and feel good, it helps the sound, too. The case is rigid and well damped, so it won't resonance unhelpfully. The thick aluminium front panel looks the part and also acts as a shield against electrical interference from sources such as dimmers and RF devices. All these details combine to create an amplifier that not only looks stylish but also offers exceptional resistance to both mechanical and electrical interference.

To experience music more vividly than ever before, the Cambridge Audio Azur 851A provides your front row seat.
Analogue RCA Inputs 8
Audio Outputs 2
Bluetooth No
Dimensions WxDxH (mm) 430 x 385 x 115
DLNA Compliant No
Freq Response (Hz) 10 - 50,000
Headphone Output Yes
Internet Radio Services No
Loudness Control No
MP3 Front Input No
Optical Digital Inputs No
Phono Input No
Power Amp In No
Power Consumption- Normal Use 800
Power Consumption - Standby 1
Power Output - Watts per CH 120 x 2
Pre Output Yes
Remote Control yes
Speaker Sets 2
Sub Output No
Tone Controls Yes
Tuner Radio No
USB Input No
Weight (KG) 15
Wireless Connection No
XLR Inputs 2
Brand Cambridge Audio
Colour Silver
Rated 5 out of 5 by from Quality in every respect. After my Onkyo Amp and Speakers blew i needed an Amp quickly as I love my music. As a I wanted quality without the hefty price I searched the second hand market. I secured some Tannoy 611's, which are amazing, now I need an Amp. Second hand Arcam and Audiolab Amp's price's were sky high without knowing if they would last the test of time. So decided to buy new. RS kindly showed me the CXA range. Nice sound but lacked the power I love. They then set up the Azur 851a and I knew in seconds it was the one for me. An effortless Amp with beautifully balanced sound. Every instrument sounds exactly as it should. Tried every genre of music through it and it didn't disappoint. I added a CXC transport, DAC, XLR's and XT40 Speaker cable. So much for trying to save some money. The Amp is quality in every respect. Amazing build, sound and connection choice. It's hard to imagine music can sound any better than this. Makes you play songs you wouldn't normally like just to hear them from a different perspective...Quality!
Date published: 2019-01-09
Rated 5 out of 5 by from absolutely brilliant bought this two weeks a go its in a class of its own you've got to hear to believe also put this with the 851C and monitor audio silver series 500 speakers. Bi wired with audioquest rocket 33 cables and xlr connectors what a sound thanks to Dylan at York branch
Date published: 2018-12-16
Rated 5 out of 5 by from A Superb integrated amp I'm happy with the purchase. The sound is impressive and my Focal aria 936's are an excellent match for the amp.
Date published: 2018-12-13
Rated 5 out of 5 by from Stunning performance I am not a hi fi buff and so cannot use the jargon (e.g. "a cheeky little amplifier, with just a hint of fruitiness in the mid-range") but I can say how I find its performance in my own living room. I had grown accustomed to my trustee old Technics and rather liked its warm and cosy sound. The 851A is in quite a different league. Coupled with the 851C it makes my entire collection sound as if each recording was a fresh performance.
Date published: 2018-12-09
Rated 5 out of 5 by from More than a great sound! A big sound stage,very detailed,the bass is punchy, in a word it is a brilliant amplifier! It's definitely worth purchasing! This amplifier is a flawless,impeccable piece of work!
Date published: 2018-12-02
Rated 5 out of 5 by from Great variety of features. Good sounds I recently purchased this model at the Hull shop. The service was excellent as was the delivery service. The model has plenty of outputs to satisfy most needs. The sound stage is wide and there is good separation between the speakers. Paired with a good power amp the results are sensational. Really pleased with the results of my purchase.
Date published: 2018-11-23
Rated 5 out of 5 by from Effortless Detail Previous reviews mention "detail" and I think that is my principle observation. I had a much earlier eight series amplifier years ago, before being side-tracked by surround sound and cinema amplifiers. Time (and space) have allowed for my return to a dedicated two channel music system at last. My 851A is replacing a smaller 30w amplifier which though good, ran out of steam at highish levels the sound becoming a mush. This is not insane levels but just higher than easy listening. My interest is classical and jazz, the 851A projecting a rock solid sound stage, with incredible detail, a lightly brushed cymbal or xylophone in the midst of a full orchestra clear and audible but very subtle. Massed violins on some Decca DDD recordings which can be a steely cacophony are tamed and clear. It takes a while to go through recordings and new kit sometimes causes reappraisal of old favourites, but while the Cambridge is laying bare badly recorded horrors, good stuff, (3 new recently released Copland discs on Chandos) sound superb. My system for reference is Cambridge 851A, N and C and Monitor Audio Silver 500 speakers. This is not really an absurdly expensive amplifier - you can pay a lot more - but it does perform beautifully. Telesales must get a mention, (thank you John) and delivery by BJS was very quick and efficient.
Date published: 2018-10-23
Rated 5 out of 5 by from Power to spare Bought this to go with the Cambridge Audio network streamer, and it pairs extremely well. Easy to use, and looks good too, uncluttered, and clear. Powers my floor standing speakers at all volumes, with ease.
Date published: 2018-07-31
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£1,399
Cambridge Audio AZUR 851A (Silver) is rated 4.6 out of 5 by 21.
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6 Year Supercare £139.85

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

6 YEAR SUPERCARE COSTS JUST £9.99 ON ALL ITEMS UNDER £100, OR 10% OF PURCHASE PRICE ON ANYTHING OVER £100.

We think you’ll agree that our Supercare guarantee offers fantastic value. What’s more, if you don’t use our it in the 6 year period, we’ll refund the cost of it. You really can’t say fairer than that!
Plus, if we can’t fix a fault, we will give you a like-for-like replacement.
Find out full details here.

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more

 Disabled assistance

Richer Sounds are happy to offer FREE delivery* on the vast majority of our products to blind, partially sighted and disabled customers. (*see our delivery page for T&Cs.)

Please place orders online, then contact webaftersales@richersounds.com who will advise on how to arrange the refund of your delivery charge.