Cambridge Audio Azur 851E Preamplifier

Category: Pre-amplifers, 

Product Code: 851E

Availability: Low


The pre-amp stage is all about minimal colouration. Take the source signal and pass it onto the power amp stage with as little interference as possible. That’s exactly what the 851E does, and coupled with its solid-state volume control, it retains audio signal purity and precision even at the lowest listening levels.
The 851E excels in keeping the signal pure. Every component has been designed not to interfere with the audio signal input and output, meaning that the harmonic distortion and noise levels are so low they’re almost impossible to measure and certainly can’t be heard. A solid state volume control and toroidal transformer also contribute to the incredible sonic purity of the 851E. The toroidal transformer delivers a high quality power output to the amplification circuits with no clipping of the waveform signal, to provide a consistent signal with no transformer noise, buzz or hum. These expensive components coupled to countless hours of tuning mean the 851E delivers an incredibly pure signal to your amplifier.


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THD (unweighted)
< 0.00045% @ 1kHz < 0.00057% @ 20kHz
S/N (unweighted)
< 110dBr < 90dBu
Frequency response
10Hz - 100kHz ± 0.1dB
Crosstalk @1kHz
> 110dB
Maximum output
8V RMS unbalanced 8V + 8V rms balanced
Output impedance
100 Ohms (Unbalanced or Balanced)
Subwoofer output
Flat or 200Hz 2nd Order Butterworth LPF
Max power consumption
Bass & treble controls
Shelving type
Max bass boost/cut
± 10 dB at 10 Hz
Max treble boost/cut
± 7.5 dB at 20 kHz
Standby power consumption
Black and silver
Dimensions (HxWxD)
115 x 430 x 385mm (4.5 x 16.9 x 15.2’’)
8.1kg (17.9lbs)