Cambridge Azur 651A specifications

Cambridge Azur 651A
8.2 · 2
Cambridge Azur 651A specifications, prices, product images and videos.

Azur 651A | 5055300405883
EN - 14 (PDF)
RMS power output per channel (8 Ohm)75 W
Frequency range5 - 50000 Hz
Signal-to-Noise Ratio (SNR)92 dB
Input impedance47000 Ω
Damping factor100
Peak power per channel0.002 W
Audio output channels- channels
Amplifier class-
Total Harmonic Distortion (THD)- %
Power consumption (standby)1 W
AC input voltage220-230 V
AC input frequency50 - 60 Hz
Technical details
Product colourSilver
Connectivity technologyWired
Volume controlRotary
Bass adjustment
Treble adjustment
On/off switch
MaterialAluminium, Metal
Weight & dimensions
Width430 mm
Height120 mm
Depth350 mm
Weight8400 g
Ports & interfaces
Speakers connectivity typeClamp terminals
Headphone outputs1
Headphone connectivity3.5 mm
AC (power) in
Speaker selectorA / B / A+B
Pre out port
Connection to PCUSB
Audio (L/R) in8

Sound First Design

We developed the 651A with one simple purpose:
To allow users to enjoy music from any source in fantastic quality. To find out how we achieved that, watch the video above.


For many people their computer has become more important than their towering CD collections. However, poor quality soundcards plus jitter means audio performance from PCs can be quite poor. Fortunately the 651A features a USB audio connection so you can simply plug your Mac or PC directly into the amplifier to instantly enjoy a whole world of digital music streamed from your computer.
Our in-house developed USB audio processor extracts audio data directly from your PC hard drive - bypassing its soundcard - and takes care of the critical digital to analogue conversion process, bringing clarity and warmth to otherwise dull and lifeless MP3 files.


Rather than overcomplicating the 651A, we’ve just invested in the components that really make a difference to the sound you hear.
- We use a premium toroidal transformer which is key to unruffled performance with music of all types.
- Separate transformer taps for left & right channels, twin rectifiers and separate PSUs for dual-mono operation of the left and right power amplifiers all add to the audiophile specification.
- High grade film type volume ensures the 651A also performs as well at low levels as at higher volumes.


Whatever hi-fi speaker you choose, the 651A is designed to drive any model with ease. Our retuned output stage featuring Sanken output transistors gives excellent bass response and dynamic control. Additionally our proprietary CAP5 system ensures unrivalled peace of mind against overloads, faults and clipping.


Connection support for analogue sources like CD players, iPod docks and tuners is better than ever so whether you store or stream music from your computer, iPhone or maybe you prefer the luscious sound of good old vinyl, the Cambridge Audio 651 will make all your music sound amazing.


75 Watts of class leading power per channel fills even the largest rooms with encompassing audio whilst a whole host of custom designed components together with our perfectionist approach to design means that whatever you're listening to, it will simply sound fantastic.