Cambridge Audio Azur 540P

Phono preamplifier for moving magnet cartridges

  • Cambridge Audio Azur 540P


  • Cambridge Audio Azur 540P


Item# 779540PS

Review Summary

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Original price $99.99
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Our take on the Cambridge Audio Azur 540P

by Dave Bar
Cambridge Audio

Get the most from your grooves

Vinyl is hot these days, and people are discovering (or rediscovering) just how good records can sound. Unfortunately, most new receivers and amps lack the built-in circuitry you need to plug in a turntable. And even if your system comes with a phono input, it still might leave your LPs sounding weak and one-dimensional. The Cambridge Audio 540P solves that problem in a snap. Simply plug this high-performance phono preamp in between your turntable and receiver, and instantly enjoy toe-tapping performance that brings out the best in your albums.


  • compatible with moving magnet phono cartridges
  • external power supply for reduced noise and interference
  • acoustically damped full-metal chassis with thick, brushed aluminum front panel
  • discrete transistor input stages instead of integrated circuits for greater dynamics and lower noise
  • single-ended 'Class A' gain stage with audiophile-grade passive RIAA equalization
  • gain: 39dB (at 1 kHz)
  • signal-to-noise ratio: greater than 85dB
  • THD: less than 0.009% (20-20,000 Hz)
  • RIAA response accuracy: ±0.65dB (25-20,000 Hz)
  • crosstalk at 20 kHz: greater than 76dB
  • 8-1/2"W x 1-13/16"H x 6-9/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • MM phono pre-amplifier
  • AC power supply (with attached 6' DC cord)
  • Instruction Booklet
  • WEEE Symbol
  • Caution note

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The Cambridge Audio 540P-S MM phono pre-amplifier has been designed to complement a wide range of entry-level MM (moving magnet) turntables. This high-quality pre-amplifier contains the amplification required to enable you to connect your MM turntable to your stereo amplifier or home theater receiver. Some amplifiers are already able to support turntable connections, but these built-in phono pre-amplifiers are out-performed by the Cambridge Audio 540P-S. Connected using a stereo audio interconnect cable, the 540P-S is set-up in minutes allowing you to appreciate stunning clarity, musicality, and resolution from all your vinyl recordings.

All Metal Chassis: The Cambridge Audio 540P-S MM phono pre-amplifier features an acoustically damped full metal chassis with a thick brushed aluminum front-panel.

Moving Magnet (MM) Compatible: The Cambridge Audio 540P-S is a Moving-Magnet-type (MM) phono stage; which describes the commonly used type of cartridge (sometimes referred to as a "needle" or "stylus") configuration typically supplied with affordable modern turntables.

Class A Amplification: The 540P-S MM phono pre-amplifier utilizes a single-ended "Class A" gain stage with audiophile passive RIAA equalization for excellent sound quality.

Discrete Transistors: The Cambridge Audio MM phono pre-amplifier uses discrete transistors for the input stages, instead of the more common integrated circuits which can cause interference and distortion.

MM Phono Input: The Cambridge Audio 540P-S MM phono pre-amplifier is fitted with a set of stereo RCA inputs to connect your MM (moving magnet) cartridge turntable.

Audio Output: The Cambridge Audio 540P-S MM is fitted with a set of stereo RCA outputs to connect your turntable and the pre-amplifier to the line-level inputs on your home receiver. Do not connect the 540P-S to a "Phono Input" on a receiver or amplifier.

Ground Terminal: The 540P-S has a turntable ground, in case your turntable has a separate ground lead. This provides shielding to the tone-arm and the sensitive circuitry in the turntable.

External AC Adapter: The Cambridge Audio 540P-S MM phono pre-amplifier includes an external AC power supply.

  • Input: 120V AC, 60Hz
  • Output: 12V - 500mA
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Cambridge Audio Azur 540P Reviews

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5 out of 5

Cambridge Audio Azur 540P

Written By Randy N, San Leandro, CA on Saturday, May 04, 2013
Crutchfield Customer Review (What's this?)
This device works perfectly!
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5 out of 5

Excellent bang for your buck

Written By js, Birmingham, AL on Thursday, April 25, 2013
Crutchfield Customer Review (What's this?)
I got exactly what I was looking for: a good value on a good preamp. As always, Crutchfield's customer service was excellent.
Sound. Ease of installation and use. Price.
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5 out of 5

Nice phono amp

Written By Kyle E, Centreville, VA on Tuesday, March 19, 2013
Crutchfield Customer Review (What's this?)
The Cambridge Audio 540P has been hooked up for about two weeks now and so far I'm very pleased. It was easy to connect, as there are no extra inputs or outputs and just required rca cables and a spare electrical outlet. Though I'm no expert the sound quality of the Rega turntable playing through it is great, with the amp providing plenty of boost to the signal. The unit itself is a clean little aluminum box that goes with everything and is to my ear completely silent, no electric hum to fight with the music.
Attractive, good size
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4 out of 5

Cambridge Audio Azur 540P

Written By Anonymous, Michigan on Tuesday, January 15, 2013
Crutchfield Customer Review (What's this?)
Works fine, but rather poor construction as the rubber disk type foot came off within a couple days, glued back on but maybe that should be done right in the manufacturing process and not by the consumer, but then again who gives a rats ... Any more?
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5 out of 5

Cambridge Audio Azur 540P

Written By Scott, Fort Collins CO on Sunday, December 30, 2012
Crutchfield Customer Review (What's this?)
Cambridge Audio Azur 540P works just fine NO funny noises or buzzing
works like it should
none so far
Was this review helpful?    Yes | No

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