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Low Distortion: Every component within the Cambridge Audio Azur 851E
pre-amplifier is designed not to interfere with the audio signal input and
output, meaning that harmonic distortion and noise are so low that they're
almost impossible to measure.
Solid State Volume Control: The Cambridge Audio Azur 851E
pre-amplifier employs a solid state volume control that offers precise control,
retains channel balance accurately at low levels, and offers truly linear
performance; all without introducing any distortion to the precious analog
source signal. While the volume control itself is digital, the signal remains
Terrapin Impedance Buffering Modules: Cambridge Audio's proprietary
modules replace the op-amps commonly found in similar preamplifiers. At the
critical low level gain stages, these offer far improved stereo separation and
Full Metal Chassis + Toroidal Power Supply: The 851E pre-amplifier features an
acoustically damped, low resonance full-metal chassis with a thick, brushed
aluminum front-panel. The 851E also uses a large toroidal transformer to deliver
exceptional reliability and perfect performance every time.
Balanced and Unbalanced Analog Inputs: The Cambridge Audio
Azur 851E pre-amplifier is fitted with both balanced and unbalanced analog audio
- Balanced XLR Inputs: The 851E pre-amplifier
features three sets of balanced XLR inputs to connect high-resolution CD and
SACD players. XLR is a higher-quality input that can reject noise and
interference from equipment with balanced outputs.
- Unbalanced RCA Inputs: The Cambridge Audio 851E is
fitted with eight pair of gold-plated analog audio unbalanced inputs (RCA)
to connect your external audio sources; such as your Blu-ray/DVD player,
AM/FM tuner, CD/SACD player, or Network Player.
Note: The pre-amplifier's Inputs 1, 2, and 3 feature both XLR and RCA
inputs; only one type of connector can be used at a time for an input.
Balanced and Unbalanced Analog Outputs: The Cambridge Audio
851E offers a variety of balanced and unbalance analog audio outputs.
- Preamp Outputs: The Cambridge Audio 851E is equipped
with a set of balanced XLR preamp outputs, as well as a set of RCA preamp
outputs to connect the pre-amp to Cambridge Audio's 851W power amp (779851WB,
sold separately) or other external power amplifier (sold separately).
- Sub Out: The 851E is fitted with a mono-RCA subwoofer output to
connect a powered subwoofer for added bass. This output can have either a
full-range, unfiltered frequency response or a 200Hz low pass filter can be
- Record Output: One of the pre-amp's stereo RCA inputs
is a "Record In" and is paired with a "Record Out" which also consists of
stereo RCA connectors. This allows you to connect to a CD recorder, MiniDisc
recorder, or tape recorder.
- Headphone Output: The 851E pre-amplifier offers a
front-panel 1/4" headphone output to connect a set of headphones for private
listening. When headphones are connected, the output to loudspeakers is
muted. Use headphones with an impedance of between 32 and 600 ohms.
Audio Settings: The 851E pre-amplifier offers a variety of
audio adjustments to tailor your music.
- Tone Control: The 851E has independent
Bass (10Hz) and Treble (20kHz) controls. The Bass can be adjust from -10 to
+10dB, while the Treble can be adjusted from -7.5 to +7.5dB. Balance control allows you to adjust the
relative output levels of the left and right speaker channels. The Bass, Treble, and Balance controls only effects the
preamp outputs; it does not effect the record outputs. Direct mode gives the audio signal a more
direct path, bypassing the bass and treble control circuits for the purest
possible sound quality.
- Gain: The relative levels of the inputs can be
adjusted by gain trim. This allows each to be adjusted so that each sounds
the same in terms of average loudness when you switch between them. In
addition, any input of the 851E is able to be set for fixed gain. Whenever
this input is selected the gain will automatically go to this value and will
not be adjustable by the volume control. This can be useful with sources
that have their own built in volume control.
Front-Panel LCD: The 851E has a front-panel display that shows the
current status and allows you to access the 851E' system settings menu. Here you
can adjust the listening settings of the amplifier to personal preference. The
menu system is easy to navigate and control from the remote or pre-amplifier.
You can adjust the brightness of the display.
Remote Control: The 851E is supplied with an
IR remote control that wirelessly operates this pre-amplifier, as well as other
Cambridge Audio 851 series products and Stream Magic gear (sold separately).
IR Input/Control Bus: The 851E features a IR Emitter input (3.5mm)
which allows modulated IR commands from multi-room systems or IR repeater system
to be received by the pre-amplifier. The 851E also features a Control Bus Input and
Output (RCA), which allows un-modulated commands from multi-room systems or
other components to be received by the pre-amp and loop out to another unit.
Trigger In/Out: For custom install use, the 851E can be turned on and
off (i.e. brought in and out of Standby mode) by the presence of 5-12V DC at the
Trigger input (3.5mm). A trigger input or by turning the 851E on from the
remote/front panel will also produce an internally generated 12V DC trigger
output at the Trigger Out 1 and 2 connections (3.5mm). This can be used to turn
on/ Standby a connected 851W power amplifier if desired.
RS232 Port: The integrated amp's RS232 port is used for
control of the 851E in custom install situations from an external controller. A
full protocol is available for the 851E on
Cambridge Audio's website.