The 640P phono pre-amplifier (sometimes known as a phono stage) also uses superior amplification circuitry for its MM and MC stages to provide the lowest possible distortion and noise. In addition, the flagship model employs multi-parallel capacitors to achieve exceptional RIAA accuracy of only 0.3dB up to 50kHz and features a defeatable subsonic filter. The Azur 640P phono pre-amplifier employs a comprehensively specified Moving Magnet stage, as well as the higher gain needed for compatibility with high-end Moving Coil (MC) cartridges. This raft of technologies combines to offer a hugely dynamic, involving and open sound.

The 640P features the now customary Azur acoustically damped steel chassis and a robust anodized aluminum front plate.

• Max. Power Consumption: 5 watts
• Gain @ 1kHz: 39dB / 55dB
• Nominal output: 300mV
• Sensitivity for nominal output: 3.35mV / 0.5mV
• THD 20Hz-20kHz: <0.007%
• RIAA curve accuracy <+/-0.3dB 20Hz-50kHz (subsonic filter off)
• Signal to noise ratio (using Audio Precision RIAA-1 with grounded inputs) >86dB / 72dB
• Crosstalk @ 20kHz: >76dB / >72dB
• Dimensions (W x D x H): 8.5 x 5.2 x 1.8"
• Weight: 2lbs

"The 640P delivers brilliant sound for the cash playing Bruce Springsteen’s Born To Run, impressing across the board. It makes the most of vinyl’s inherently superior timing, integrating instruments seamlessly while leaving each one secure and rigidly focused on the stage. Tempos cruise effortlessly, bass notes start and stop with straight-edged alacrity, and there’s intimacy and emotional weight to voices."

Best phono stage What Hi-Fi Sound & Vision Awards 2009

"Going forward, this pair of phono preamplifiers from Cambridge will be my first suggestion to anyone entering the world of vinyl. For $99 and $179, these phono preamplifiers are just too good to ignore and I am happy to nominate them for one of our Exceptional Value Awards for 2009."

ToneAudio (USA) Issue 21, June 2009

(Reviewed with 540P)



... the 640P delivers brilliant sound for the cash. The fine timing, detail and weight supplied by the Cambridge Audio will help to breathe new life in to your records."

Winner of Best Phono Stage

What Hi-Fi? Sound & Vision Awards 2008