Azur 640P vs Azur 651P
The Azur 651P's signal-to-noise is 86 dB against the Azur 640P's 85 dB and its thd 0.005% against 0.007%. Both share mm gain (39 dB) and mc gain (55 dB).
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPhono Pre-AmpsDiscontinued
Estimated price (community-sourced)
$100
Around — community and catalog average, updates slowly
About the Azur 640P
The Cambridge Audio Azur 640P is a phono preamplifier that supports both MM and MC cartridges, offering high gain and low noise performance. It uses single-ended 'Class A' gain stages with discrete transistors instead of integrated circuits, reducing cross-talk and interference. The 640P employs audiophile passive RIAA equalisation for minimal phase distortion and features multi-parallel capacitors to achieve exceptional RIAA accuracy of ±0.3dB up to 50kHz. It includes a defeatable subsonic filter to reduce vinyl rumble and comes in an acoustically damped steel chassis with a robust anodised aluminium front plate. Gold-plated input connectors minimize signal degradation, and an external power supply is standard. The unit is praised for its quiet operation, clean and well-defined sound, excellent detail extraction, and controlled bass. Dimensions are 215 x 46 x 133 mm, weighing 0.9 kg. It was released around 2005 and is no longer in production.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.007%
- SNR
- 85 dB
- Output Voltage
- 0.3V RMS
Phono Preamplifier
Phono stage specifications
- MM Gain
- 39 dB
- MC Gain
- 55 dB
- Adjustable Loading
- No
- Adjustable Capacitance
- No
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 215 × 46 × 133 mm (W × H × D)
- Weight
- 0.9 kg (2 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions