Cambridge Audio Azur 851W Stereo Power Amplifier - Pre-Owned
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Items must be returned in original condition and packaging, including all accessories, manuals and any promotional items. The cost of return is your responsibility and we strongly recommend insuring the goods, as refunds cannot be issued for damaged or incomplete returns. If items show excessive handling, are missing components, or cannot be resold as new, a reasonable deduction may be made.
Please note that used headphones (for hygiene reasons) and custom or special-order items cannot be returned. If you need assistance arranging a return, we’re always happy to help.
Product Summary
The Cambridge Audio Azur 851W is a powerful high-end stereo power amplifier designed to deliver exceptional control, low distortion and effortless dynamics. Using Cambridge Audio's Class XD amplification technology, it combines the refinement associated with Class A operation with the efficiency and power of a conventional Class AB design.
In stereo operation the 851W delivers 200 watts per channel into 8 ohms, increasing to 350 watts per channel into 4 ohms, giving it the current and headroom needed to drive demanding loudspeakers with authority. It can also be configured for bridged mono operation, delivering up to 500 watts into 8 ohms.
A substantial audiophile-grade toroidal transformer, separate transformer for the input circuitry and extensive heatsinking provide a stable foundation for high-power performance. Balanced XLR and unbalanced RCA inputs make the 851W easy to integrate with a wide range of preamplifiers and source components.
This is a pre-owned unit that has been well cared for. There is noticeable scratching on the right hand side panel but otherwise is in good condition. The power cable will be supplied but no manual, original box other accessories. It will be packed well in alternative packaging.
Key Benefits
- High-power Class XD stereo power amplifier
- 200W per channel into 8 ohms
- 350W per channel into 4 ohms
- 500W into 8 ohms in bridged mono mode
- Selectable stereo, mono and bridged mono operation
- Extremely low distortion
- Oversized audiophile-grade toroidal transformer
- Separate transformer for low-noise input circuitry
- Balanced XLR and unbalanced RCA inputs
- CAP5 protection technology
- Audio-detect automatic power operation
- Rigid acoustically damped metal chassis
- Suitable for demanding high-performance loudspeakers
Technical Specifications
Amplification
- Amplifier Type: Class XD Power Amplifier
- Stereo Output: 200W per channel into 8 ohms
- Stereo Output: 350W per channel into 4 ohms
- Bridged Mono Output: 500W into 8 ohms
- Bridged Mono Output: 800W into 4 ohms
- Operating Modes: Stereo, Mono and Bridged Mono
- Damping Factor: Greater than 110 at 1kHz
Audio Performance
- Frequency Response: 5Hz - 80kHz
- THD: Less than 0.001% at 1kHz
- THD: Less than 0.005% from 20Hz - 20kHz
- Signal-to-Noise Ratio: Greater than 90dB
Inputs
- Balanced XLR analogue inputs
- Unbalanced RCA analogue inputs
- Input Impedance: 38k ohms balanced
- Input Impedance: 68k ohms unbalanced
- Input Sensitivity: 1.5V RMS in stereo/mono operation
Control & Protection
- CAP5 protection system
- Audio-detect automatic power up/down
- 12V trigger connectivity
- Less than 0.5W standby consumption
Dimensions & Weight
- Height: 148mm
- Width: 430mm
- Depth: 365mm
- Weight: 19.1kg
Please note: The Cambridge Audio Azur 851W is a discontinued / archived model.
