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Azur 551R

7.1 HDMI AV Receiver

As TVs become impossibly thin - and sound quality gets even leaner - there's never been a better time for a home theatre system that sounds sensational but is also simple to use.

Available Colours

Azur 551R

7.1 HDMI AV Receiver

As TVs become impossibly thin - and sound quality gets even leaner - there's never been a better time for a home theatre system that sounds sensational but is also simple to use.

Available Colours
Our View
Head of Marketing
"My team and I took a relentless "sound first" approach to the design of our 551R so that as well as sounding great with movies it sounds incredibly musical too - something not easily achieved!"


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  • 4 HDMI in, 1 out with support for 3D TV / Deep colour pass thru / Audio Return Channel reception
  • Faroudja FLI2310 video scaler for upscaling and analog to digital video transcoding/scaling (composite, S-video and component video to HDMI)
  • Scaler bypass mode - allows user to engage/disengage video scaler for each input as appropriate
  • Oversize low flux toroidal transformer and discrete amplifiers delivering ultra-low noise and distortion
  • Cirrus Logic dual 32-bit DSPs for compatibility with the latest CODECs including Dolby Digital Plus, DTS- HD High Resolution and the Lossless Dolby True HD and DTS-HD Master Audio formats
  • Pure Analogue Stereo Direct mode for audiophile playback of analogue stereo sources
  • Individual Crossovers and Advanced Bass Management
  • Cambridge Audio Mic Controlled Auto Set-up (CAMCAS) with microphone supplied
  • Full 5.1/7.1 multi-channel analogue inputs and preamp outputs
  • Adjustable lipsync delay per source
  • DTS Speaker re-mapping allows the playback of DTS-HD High Resolution or Master Audio formats with encoded height information on standard 5.1, 6.1 or 7.1 speaker setups
  • Bi-amp mode for front left/right with surround back left/right in 5.1 set-up
  • X-Tract™ Forced/Convection Heat Tunnel for virtually silent performance
  • FM/AM tuner with RDS
  • RS232 control, IR Emitter Input
  • Low resonance, acoustically damped full metal chassis
  • Navigator style Azur remote control
  • Also controllable from 651BD/751BD remote
  • Slim, aesthetic design - only 110mm (4.3'') tall!

Top Tips


Power output110W RMS per channel, into 6 Ohms (two channels driven). 90W RMS per channel, into 8 Ohms (two channels driven). 60W RMS per channel, into 8 Ohms (all 7 channels driven)
THD<0.006% @1kHz
Crosstalk<-60dB @ 1kHz
Frequency Response10Hz - 20kHz -1dB
Signal to Noise Ratio>90dB 'A' weighted
Audio input impedance/sensitivity47k Ohms / 175mV or greater
Digital input impedance75 Ohms (Coaxial/S/P DIF)
Tone ControlsBass: +/-10dB @ 100Hz Treble: +/-10dB @ 10kHz
TunerFM mode: 87.5-108MHz, 75 Ohm coaxial aerial AM mode: 522-1629kHz, 300 Ohm loop aerial
Video levels/impedance- Composite (CVBS): 1Vp-p / 75 ohm - S-Video (S-VHS): Y 1Vp-p / 75 ohm C 0.286 Vp-p / 75 ohm Component: Y 1Vp-p / 75 ohm Cb/Cr 0.75Vp-p / 75 ohm Pb/Pr 0.75Vp-p / 75 ohm
HDMIHDMI 1.4 EIA/CEA - 861D HDCP 1.1 All audio modes supported except reception of native Direct Stream Digital (DSD). ARC and 3D-TV/deep colour pass through supported. CEC and HEC not supported.
ArchitectureCirrus Logic CS43122 24 Bit 192kHz capable DAC for Front Left & Right Cirrus Logic CS52526 24 Bit 192kHz capable CODEC for surround channels + 24 Bit 2 channel A/D conversio Cirrus Logic CS497004 dual 32 bit DSP Faroudja FLI2310 scaler
Audio Inputs6 x Line Level Analogue Tuner (FM/AM) 7.1 Analogue Input 4 x Digital Co-axial, 4 Digital Optical
Video Inputs2 x Composite, 2 S-Video, 2 x Component Video, 4 HDMI
Audio Outputs7 x Amplified Speaker Outputs 7.1 x Preamp outputs
Video output1 x HDMI
Recording Audio outputs1 x Line Level Analogue 1 x Digital Co-Axial, 1 Digital Optical
Other Connections1 x 1/4" / 6.35mm Headphone Outpu (32 To 600 ohms recommended) 1 x IR Emitter In 1 x RS232C 1 IEC type mains inlet
Standby power consumption<1W
Quiescent power consumption<70W
Max. Power Consumption700W
Dimensions (W x H x D)430 x 110 x 340mm (16.9 x 4.3 x 13.3'')
Weight10.0Kg (22lbs)