As great for music as it is for movies
The 651R is designed from the ground up to perform at its peak not just when driving up to 7.1 surround sound speaker set-ups, but also to deliver stunning, pin-sharp stereo music from your main front speakers. Such versatility is rare indeed.  

Powerful amplification
7.1 outputs delivering 175W RMS power stereo (2 channel, 6 ohms) and 100W RMS power surround sound (7 channel, 8 ohms).

DTS remapping

DTS-HD High Resolution and DTS-HD Master Audio surround sound formats do not support more than one standardised 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 651R and 751R and the signal will be perfectly rephased.

Zone 2 with "Follow Main"
Most modern, surround sound home cinema 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 analogue source for the audio. Of course, the 651R can do this too. But with its "Follow Main" mode, it can do something more - something unique to our receivers. In "Follow Main" two rooms can simultaneously receive the same digital audio signals, including the audio from HDMI.

"Sound First" design principles
By focussing solely on the things that make music and movies sound and look so good that the hairs on the back of your neck stand up, and cutting out any extra cost and clutter, we aim to deliver the best-sounding system at this price you'll ever hear. That means we remove stuff that you don't need and which can introduce distortion to your all-important audio and video signals - like a phono stage, networking capabilities or a pre-amp in a home cinema receiver. Everything that's left is there to make your music and movies sound and look better.

Toroidal transformer
At Cambridge Audio, we're huge fans of what these premium components can do for audio quality. So, while other people save them for their top-of-the-line separates, we put them everywhere we can. As well as delivering a high purity, low-distortion signal they deliver a better bass response. For pure audio quality and minimum distortion, we accept nothing less.

All-metal case
Chosen not just for its good looks (although we think our solid, brushed aluminium fronts make a great addition to any home), we design all-metal cases because they're very stable and  introduce less resonance  to any signal.

X-Tract cooling
Our near-silent cooling combination of funnelling heat through a heatsink and thermostatically controlled fan means that our systems 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).

Dual Texas Instruments 32-bit DSPs
High-quality and up-to-the-minute digital signal processors mean the 651R 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.