Cambridge Audio 851A

$2,499

Brand Cambridge Audio

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Like all Cambridge Audio products, the 851A adheres to our three core values: stunning performance, ease of use and incredible value.

Capable of delivering an enormous 120 watts of high-quality power, it benefits from two audiophile-grade toroidal transformers: one for the sensitive preamp section and one for the power stages allowing the 851A to deliver its immense output without stress. This incredible speaker-taming amount of power can be precision-controlled with another innovation found in the 851A - the new fully balanced silicon gate volume control, which gives very fine adjustment across the volume range and highly accurate channel-balancing.

Because everyone's needs are different, the 851A offers two main types of connectivity: the more commonly found RCA/Phono inputs, plus two pairs of fully balanced XLR connections. Our matching 851C upsampling CD player also features both types of connection, allowing you to connect your system in the very highest quality possible.

Speaking of flexibility, you can even control your iPhone, iPad or iPod using the 851 Series remote control when they're docked in our matching iD100 digital dock.

Unlike many high end amplifiers which excel in one area over another, we believe the 851A offers the perfect combination of high performance, flexibility and ease of use.

Features

Class XD amplification designed to eliminate crossover distortion at low signal levels

New balanced volume topology controllable in 1dB steps, giving very fine control, and superbly accurate channel balance
Audiophile grade oversize toroidal transformer and substantial extruded heatsink allowing 2 x 120 Watts RMS into 8 Ohms or 2 x 200W into 4 ohms.
Separate transformer taps for left and right channels, twin rectifiers and separate PSUs for dual mono operation of the left and right power amplifiers
A separate toroidal transformer supplies the preamp making the 851A effectively a Pre and Power amp combination in one box
CAP5 protection technology for trouble free operation
Acoustically damped full metal chassis with thick brushed aluminium front panel
Customisable front panel display
Balanced and unbalanced analogue audio inputs for superior connectivity
RS232 controllable
Eco-friendly <0.5W Standby power consumption
Available in black and silver finishes

Specifications

Power output 120W RMS into 8 Ohms
200W RMS into 4 Ohms
200W RMS into 4 Ohms
THD (unweighted) < 0.001% 1 kHz at 80% of rated power
< 0.01% 20 Hz - 20 kHz at 80% of rated power
Audio inputs 2 x balanced XLR
8 x RCA inputs
Audio outputs Preamp output
Record output
Frequency Response 10 Hz - 50 kHz +/- 1 dB
S/N ratio (ref 1w):  > 93 dB (ref 1W/8 Ohm)
Input Impedance: Inputs 1 and 2 (balanced) 20 kOhm
Inputs 1-7 unbalanced 20 kOhm
Rec Input 20 kOhm 
Power amp damping factor: > 110 at 1 kHz
Max. Power Consumption 800W
Min. power consumption Active (no signal) 70W
Standby power consumption Standby <0.5W
Shelving type
Max bass boost/cut +/- 10 dB at 10 Hz
Max treble boost/cut +/- 7.5 dB at 20 kHz
Dimensions (W x H x D) 430 x 115 x 385mm (16.9 x 4.5 x 15.2”)
Weight 15.0Kg (33lbs)

 

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