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"You're in the Presence Of Greatness"
The Cambridge Audio Azur 751R is the ultimate audiophile home theater receiver. It will make your music sound as great as your movies, with both sounding out of this world. It's perfect for pumping out audiophile stereo and surround sound action. And it'll squeeze the maximum detail from any audio and video source.
"If it could somehow leap off this page into your ears, you'd know you're in the presence of greatness within the first five minutes of any dynamically and timbrally challenging content," reports Mark Fleischmann in the June 2013 issue of HomeTheater magazine. "The Azur 751R is worth every penny of its asking price."
Scaling and Upsampling
The 751R's Anchor Bay ABT2010 scaler will coax 1080p full HD detail out of even analog video signals. And the receiver also features a unique scaler bypass mode that improves picture quality by preventing 'double-scaling' of content that has already been upscaled externally by a Blu-ray player, PS3, or other component.
In addition to video upscaling, the 751R features audio upsampling. Detail from any audio source, from MP3s to high-end digital audio streams, can be boosted to up to 24-bit/192 kHz better-than-CD-quality. Digital audio files from laptops, PCs, and more can also be upsampled via the asynchronous USB input, bypassing soundcards for maximum quality and delivering 24-bit/192 kHz ultra-high-quality audio.
The 751R includes 7.1 outputs (with option to run twin subs), Texas Instruments 32-bit DSPs to support a broad range of surround formats and speaker layouts, and a comprehensive range of HDMI inputs and outputs. The three DSPs each perform an independent function. They are responsible for surround format decoding, post-processing, and ATF upsampling.
ATF Upsampling
Anagram Technologies ATF upsampling boosts audio quality from any source to 24-bit/192kHz, while minimizing errors. What's so special about ATF upsampling? By using clever algorithms to plot sample points to a curve, rather than a straight line, the ATF system gets closer to natural soundwaves. It works brilliantly, delivering lower jitter levels, fewer timing errors, and a more naturally clear sound.
Asynchronous USB Audio Input
Plug in a laptop or other computer, and the 751R's asynchronous USB port bypasses your computer's inferior-quality soundcard and instead upsamples the digital music to 24-bit/192kHz for better-than-CD-quality digital audio file playback.
'Sound First' Design Philosophy
The 751R features a range of quality components that fit with Cambridge Audio's principle of designing for 'Sound First.' This includes toroidal transformers for a high purity, low-distortion signal, discrete amplifiers to reduce noise, and X-Tract near-silent cooling combined with a rigid low-resonance chassis to maximize audio signal quality.
There's plenty of room-filling power, too. The 751R delivers 200-watts RMS per channel in stereo (two channels at 6 ohms) and 120-watts RMS per channel for home theater surround sound (seven channels at 8 ohms). And the environmentally friendly standby mode uses less than one watt.
Zone 2 with 'Follow Main'
The 751R features Cambridge Audio's unique 'Follow Main' Zone 2 option. Most surround sound receivers will let you run a second audio zone somewhere else in the house. You can listen to one piece of music in one room, while listening to something else in a second room. The catch? The second room can only use an analog source for the audio. The 751R can do this too. But with its 'Follow Main' mode, two rooms can simultaneously receive the same digital audio signals, including the audio from HDMI.
DTS Remapping
Another feature of the 751R that's rarely found elsewhere is DTS remapping. This lets you easily rephrase DTS-HD High Resolution and Master Audio format audio signals to your 7.1 speaker layout perfectly.
DTS-HD High Resolution and DTS-HD Master Audio surround sound formats do not support more than one standardized 7.1 home speaker layout. So, if your home speakers are arranged differently to the layout the soundtrack was recorded in, they can end up out of phase. But simply choose the 7.1 speaker arrangement that matches yours on the Azur 751R, and the signal will be perfectly rephased.
Toroidal Transformer
Cambridge Audio is a huge fan of what premium toroidal transformers can do for audio quality. So, while other people save them for their top-of-the-line separates, Cambridge Audio puts them everywhere they can. As well as delivering a high purity, low-distortion signal they deliver a better bass response.
Dual Texas Instruments 32-bit DSPs
High-quality and up-to-the-minute dual Texas Instruments 32-bitdigital signal processors mean the 751R plays all the latest audio formats, including Dolby Digital, DTS, Dolby Pro Logic II/x/z, Dolby True HD, Dolby Digital Plus, DTS-HD Master Audio, DTS-HD High Resolution Audio and many more.
Full Room Audyssey Room EQ
Cambridge Audio's latest-generation EQ, dynamic volume, and phasing automatic setup system from Audyssey means the 751R will always sound at its best, no matter what shape or size your room is, and no matter where you sit - with setup optimized for three separate seating locations.
X-Tract Cooling System
The 751R uses a near-silent cooling combination of funnelling heat through a heatsink and thermostatically controlled fan. This allows it to stay cool without delivering distracting noise. Only at moments of peak power use will the fan really be at full speed (and those moments, of course, will be when you won't be able to hear it).
Audiophile-grade Components
In addition to its full metal chassis, toroidal transformers, and X-Tract near-silent cooling, the 751R features isolated input and video processing boards, individual crossovers for each speaker and Advanced Bass Management to ensure minimum noise distortion, maximum video quality, and the best quality audio out of whatever sound format is playing. | 
