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Cambridge Audio Azur 651W Power Amplifier

Cambridge Audio Azur 651W Power Amplifier

The Azur 651W is a two channel power amplifier, designed specifically to be partnered with a high quality digital pre-amplifier such as the Stream Magic 6.

R15,990

R13,592

R15,990

R13,592

Cambridge Audio Azur 651W Power Amplifier

By separating out power amplifier functionality, our engineers were able to give this amplifier the time and dedication that it needs to deliver the ultimate performance.

By featuring both fully balanced XLR and unbalanced RCA analogue audio inputs, the 651W is, of course, designed to work in perfect synergy with a dedicated Cambridge Audio pre-amplifier. By connecting a digital pre-amplifier such the Stream Magic 6, the 651W provides the powerhouse in a truly astonishing digital music system!

The Azur 651W is a two channel power amplifier, designed specifically to be partnered with a high quality digital pre-amplifier such as the Stream Magic 6.

Helping us to achieve this incredible sound are some other key features rarely seen at this price point.

Immense power. Into 8 Ohms, the 651W outputs 100W per channel in stereo mode. Into 4 Ohms, this figure
increases to 150W per channel!

Toroidal transformer.

The 651W uses an audiophile grade oversize toroidal transformer and substantial extruded heatsink to deliver perfect power, with extremely low distortion. 

Output transistors.

Two pairs of high current output transistors per channel allow the 651W to drive almost any speaker with ease, with excellent bass response and dynamic control.

Dual mono design.

The 651W uses a clever dual mono amplifier design – this means that we take separate feeds from the large toroidal transformer and process the left and right channels separately, meaning that the 651W is effectively two mono block amplifiers put together in one chassis – this gives superior stereo imaging and sound-staging to the competition.

Further improvements.

By featuring both fully balanced XLR and unbalanced RCA analogue audio inputs, the 651W provides a versatile and high-end-friendly range of connections.

CAP5  (Cambridge Audio Protection 5)

Protects the 651W, plus any connected equipment and speakers, ensuring ultimate reliability and peace of mind.

  • Over current – protects speakers from being driven too hard
  • Temperature protection – in case of inadequate ventilation
  • DC Detect – protects against the most common user errors in set-up
  • Short circuits – to detect incorrectly connected speakers
  • Clipping – prevents damage if the 651W is driven too hard

Superior connectivity

The 651W features both unbalanced RCA and balanced XLR audio inputs – the latter ideal for connecting to modern high-end sources. Plus flexible trigger and IR inputs, and control bus options make it easy to connect to modern pre-amplifiers for power syncing

All metal design

Electronics (and therefore sound quality) are particularly susceptible to vibration; that’s why we’ve used a low resonance, acoustically-dampened metal chassis to eliminate as much vibration as possible, ensuring that the most sound quality is extracted from each source.

Specifications

Power output 100W per channel into 8 Ohms

150W per channel into 4 Ohms

THD (unweighted) < 0.001% 1 kHz

< 0.005% 20 Hz - 20 kHz

Frequency response 5Hz – 80kHz +-1dB
S/N ratio (ref 1W / 8 Ohn) >90dB (unweighted)
Sensitivity 1.5V rms unbalanced

1.5 + 1.5V rms balanced

Input impedances Balanced input 38 kOhm

Unbalanced input 68 kOhm

Power amp damping factor > 125 at 1 kHz
Trigger in 5 – 12V AC or DC
Trigger out 12V DC @ 100mA
Maximum power consumption 750W
Idle power consumption (no signal) 45W
Standby power consumption <0.5W
Dimensions (H x W x D) 115 x 430 x 340mm (4.5 x 16.9 x 13.4”)
Weight 10.7kg
Name Cambridge Audio Azur 651W Power Amplifier
Short Description

The Azur 651W is a two channel power amplifier, designed specifically to be partnered with a high quality digital pre-amplifier such as the Stream Magic 6.

SKU AZUR651W
Price / Quote Option Price Only
Frequency Response 5Hz – 80kHz +-1dB
Manufacturer Cambridge Audio
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