The Cambridge Audio Azur 840A V2 now embraces the second generation of Cambridge Audio's patent pending proprietary technology and has employed some subtle but significant updates to improve upon this already outstanding design. The second generation Class XD is now complemented by a new output stage carefully adjusted to integrate with this novel technology, revised balanced inputs for lower distortion and noise and a new more accurate volume control with even lower crosstalk for greater stereo imaging. The heart of this amp is Cambridge Audio's patent pending XD amplifier technology, a design in which the amp spends a fair bit of its operation in pure Class A mode and when it switches to B mode, it does it without the switching distortion that affects most AB amps. Completely separate pre-amp and power amp toroidal transformers and circuits make the 840A effectively a pre and power amplifier combination in one chassis.
120 WPC (8 ohms) 200WPC (4 ohms)
CES 2007 Innovative award winner
Stereophile recommended component
England's Hi-Fi Choice "Best Buy" winner
Both single ended RCA and Balanced XLR
Remote included
Available in Silver or Black
Backed by Cambridge Audio's 30 Day Satisfaction Guarantee

* Original shipping charges are non-refundable. The customer is responsible for return shipping fees.

Cambridge Audio breaks new ground with an entirely new class of amplifier in the shape of the 840A which marks the zenith of Cambridge Audio's critically acclaimed Azur line-up.

Embracing Cambridge Audio's patent pending proprietary Class XD technology, the 840A brings together the quality of Class A amplification, the power economy of Class B designs, and most amazingly of all, avoids many of the distortion pitfalls inherent in Class AB designs.

Click here to read an exclusive Hi-Fi World interview with the designer of Class XD technology

Completely separate pre-amp and power amp toroidal transformers and circuits make the 840A effectively a pre and power amplifier combination in one chassis

Another enormous benefit is its ability to integrate seamlessly with a home cinema system. Fixed level inputs allow the 840A to provide the front channel amplification to systems which use an AV receiver. The receiver continues to provide centre and rear amplification.

In addition to this innovative technology, the 840A uses an extremely sophisticated resistor ladder and relay attenuator for volume control and the same high quality relay switches for input selection. This enables high isolation between inputs, very accurate channel balance and leaves the amplifier completely free from the distortion associated with conventional semiconductor switching and volume control.

As with all Azur products, the foundation of the Azur 840A's strength is a bespoke chassis. This comprises an incredibly thick 7mm front panel and extruded side panels, both fashioned from aluminium, which combine with a 2mm formed steel base plate and specially designed vibration absorbing feet. The result is an ultra rigid, low resonance, acoustically dampened platform for the electronics to sit in.

Subject of many in-depth reviews in the hi-fi and specialist electronics press, the 840A recently won Hi-Fi Choice's coveted amplifier 'Ultimate Group Test' beating competitors almost three times the price!
Click here to read the review


Great attention has been paid to ensure that all functions can be operated from the stunning aluminium-faced Azur Navigator remote. As well as offering full control over all the 840A's features and functions, this neat handset also enables track skip plus play and pause of iPods? connected to Apple's iPod Universal Dock

Azur 840A V2 Features:

Patent pending proprietary Class XD technology.

Oversized low flux toroidal transformers

120 watts per channel (8 ohms) 200 watts per channel (4 ohms)

Completely separate pre-amp and power amp toroidal transformers and circuits make the 840A effectively a pre and power amplifier combination in one chassis

8 audio inputs - including 1 with balanced connections

Sophisticated resistor ladder and relay based attenuator for volume/balance control

Two pairs of very high current output transistors per channel

Twin rectifiers and separate transformer taps for dual mono operation of the left and right power amplifiers

RS232 port, IR emitter In and Control Bus In/Out for seamless integration with custom install systems

A-BUS / Incognito Ready connections compatible with Cambridge Audio's new Incognito multi-room keypads or other A-BUS compatible keypads allow the 840A to form the hub of a simple but highly effective 3 zone multi-room system

Fixed level inputs allow the 840A to provide the front channel amplification when integrated with home cinema systems that use an AV processor

Cambridge Audio proprietary CAP5 protection system

Nameable inputs, backlit LCD screen

Extruded aluminium side panels and solid aluminium front panel plus an ultra rigid, acoustically dampened chassis

Navigator style Azur remote control which also controls Azur CD players plus the Apple Universal Dock

Available in silver or black Azur 840A V2 Specifications: Power Output: 120 watts per channel (8 ohms) 200 watts per channel (4 ohms) Input Impedance: Input 1 (balanced)10 kOhm Inputs 2-7 68 kOhm Tape input 68 kOhm THD (unweighted): < 0.0015% 1 kHz at 80% of rated power < 0.015% 20 Hz - 20 kHz at 80% of rated power   Frequency Response: 10 Hz - 50 kHz +/- 1 dB Signal to Noise Ratio: >83 dB Power amp damping factor: > 110 at 1 kHz Bass: Max bass boost/cut +/- 10 dB at 10 Hz Treble: Max treble boost/cut +/- 7.5 dB at 20 kHz Max. Power Consumption: 800W Min. Power Consumption: Active (no signal) 70W Standby 7W Dimensions (W x D x H): 430 x 385 x 115mm 16.9 x 15.2 x 4.5"