Cambridge Audio Azur 851W Power Amplifier (Black) - Refurbished. The 851W is our flagship power amplifier, with immense power and incredibly low distortion. Its perfectly matched to partner our 851E pre-amplifier and 851N network player; taking their pure signal and amplifying it with huge presence and authority. Youll re-discover your favourite music in a quality that youve never heard before.
Rather than use a Class A design, which is sonically brilliant but generates vast amounts of heat, or a Class AB design, which is efficient but sonically limited, we developed our own Class XD amplifier design which the 851W takes advantage of. This has the sonic purity of Class A and the efficiency of Class AB for the best of both worlds. When designing a stereo system, listeners are often encouraged to think about system matching, where components are handpicked to provide the best overall sound quality. People often assume this is due to the different audio characteristics, but frequently it is due to impedance (the relationship between voltage and current input/output) matching components. Products perform at their optimum when their input and output impedances match.
This isnt always possible though so we decided to develop our unique Terrapin impedance buffering module. This enables the 851W to be paired with a huge variety of audio sources and pre-amplifiers of varying impedance without risking any sacrifice in musicality or overall audio performance. To build the 851W to be the best toroidal transformers were essential. But rather than use one for everything we designated one for the sound amplification itself, and another for the input circuitry. This means the signal is unaffected by audio output volume, so always sounds fantastic.
The primary toroidal transformer provides unrestricted power to the dual mono amplification blocks. Its a true audiophile transformer that will operate without distortion and with no buzz, interference or hum. The second smaller toroidal transformer takes care of pre-amplification processes. View the videos below for an insight on why we use toroidal transformers. The 851W can be used in stereo, bi-amped or bridged mono configurations.In bridged mono mode into 8 Ohms the 851W is a 500W monoblock amplifier. Into 4 Ohms, this figure increases to an incredible 800W. It can be paired with our 851E pre-amp, any of our digital pre-amps such as the 851N or CXN, or any other analogue pre-amps, and thanks to our Terrapin buffering module it will always sound perfectly matched. This is a refurbished previously owned and loved Cambridge product which has been expertly repaired. All products come complete with original accessories. 200W per channel into 8 Ohms 350W per channel into 4 Ohms. 500W 8 Ohms 800W 4 Ohms. < 0.001% 1 kHz < 0.005% 20 Hz - 20 kHz. S/N ratio (ref 1W / 8 Ohn).
1.5V rms unbalanced 1.5 + 1.5V rms balanced. 0.775V rms unbalanced 0.775V + 0.775V rms balanced. Balanced input 38 kOhm Unbalanced input 68 kOhm.> 110 at 1 kHz. 148 x 430 x 365mm (5.8 x 16.9 x 14.4). The unit may be cosmetically scratched or have minor dents. However, all functions work to specifications.
The unit has been performance tested and meets all standards for functionality and normal use. It also comes with US-compatible power cords and/or chargers. We will send your order by UPS.
At busy periods such as public holidays, it can take longer so please allow additional time in case of postal delays/strikes/incremental weather or technical issues. At Cambridge Audio we stand behind the quality of our goods. We'd expect this to mean that you've kept all original packaging and labels, and that it's undamaged and unused. We'll require an explanation for the return (defective, damaged, etc). Don't be surprised if we ask you some pretty detailed questions about the reason for your return.
Hearing first-hand what our customers are experiencing will enable us to provide you with the best possible service. Note that after 30 days all sales are final. Failure to do this will delay the processing of your return. Your package must arrive in resalable condition.
If these instructions are not followed your return may not be accepted. Cambridge Audio is not liable for any uninsured packages. Cambridge Audio does not honor warranties for C-stock products taken overseas due to voltage issues, certification concerns, and possible transit damage. During this period, Cambridge Audio. Will repair or replace, at our option, this product or any defective parts.
Cambridge Audio does not honor warranties for B-stock products taken overseas due to voltage issues, certification concerns, and possible transit damage. At Cambridge Audio, we strive to provide the best possible customer service.
We know you dont like faff. Thats why our products are designed to be easy to set up and use.If you do have a problem or a query of any sort, just call our team on and one of our friendly experts will walk you through the set up or problem and get you up and running fast. The item "Cambridge Audio Power Amplifier 2 Channel Professional Stereo/Mono (Black 851W)" is in sale since Monday, June 4, 2018. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps".
The seller is "cambridgeaudiousa" and is located in Rockaway, New Jersey. This item can be shipped to United States.