Safety Precautions

Checking the Power Supply Rating

For your own safety please read the following instructions carefully before attempting to connect this unit to the mains.

Check that the rear of your unit indicates the correct supply voltage. If your mains supply voltage is different, consult your dealer.

This unit is designed to operate only on the supply voltage and type that is indicated on the rear panel of the unit. Connecting to other power sources may damage the unit.

This equipment must be switched off when not in use and must not be used unless correctly earthed. To reduce the risk of electric shock, do not remove the unit's cover (or back). There are no user serviceable parts inside. Refer servicing to qualified service personnel. If the power cord is fitted with a moulded mains plug the unit must not be used if the plastic fuse carrier is not in place. Should you lose the fuse carrier the correct part must be reordered from your Cambridge Audio dealer.

The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un-insulated ‘dangerous voltage’ within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the service literature relevant to this appliance.

This product complies with European Low Voltage (73/23/EEC) and Electromagnetic Compatibility (89/336/EEC) Directives when used and installed according to this instruction manual. For continued compliance only Cambridge Audio accessories should be used with this product and servicing must be referred to qualified service personnel.

4Azur compact disc player

The crossed-out wheeled bin is the European Union symbol for indicating separate collection for electrical and electronic equipment. This product contains electrical and electronic equipment which should be reused, recycled or recovered and should not be disposed of with unsorted regular waste. Please return the unit or contact the authorised dealer from whom you purchased this product for more information.

Plug Fitting Instructions (UK Only)

The cord supplied with this appliance is factory fitted with a 13 amp mains plug fitted with a 3 amp fuse inside. If it is necessary to change the fuse, it is important that a 3 amp one is used. If the plug needs to be changed because it is not suitable for your socket, or becomes damaged, it should be cut off and an appropriate plug fitted following the wiring instructions below. The plug must then be disposed of safely, as insertion into a 13 amp socket is likely to cause an electrical hazard. Should it be necessary to fit a 3-pin BS mains plug to the power cord the wires should be fitted as shown in this diagram. The colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug. Connect them as follows:

The wire which is coloured BLUE must be connected to the terminal which is marked with the letter ‘N’ or coloured BLACK.

The wire which is coloured BROWN must be connected to the terminal which is marked with the letter ‘L’ or coloured RED.

The wire which is coloured GREEN/YELLOW must be connected to the terminal which is marked with the letter ‘E’ or coloured GREEN.

If your model does not have an earth wire, then disregard this instruction.

If a 13amp (BS 1363) plug is used, a 3amp fuse must be fitted, or if any other type of plug is used a 3amp or 5amp fuse must be fitted, either in the plug or adaptor, or on the distribution board.

640C V2.0, 540C specifications

The Cambridge Audio 540C is a highly regarded CD player that exemplifies the commitment of Cambridge Audio to deliver exceptional audio performance and build quality. Designed for music lovers who appreciate the nuances of sound, the 540C integrates cutting-edge technology with an elegant design, making it an indispensable addition to any audio setup.

One of the standout features of the 540C is its advanced digital-to-analog converter (DAC). This player incorporates a high-quality Wolfson DAC, renowned for its ability to render music with exceptional clarity and detail. The inclusion of this DAC allows the 540C to reproduce audio with stunning precision, ensuring that every note is captured accurately, preserving the integrity of the original recording.

The 540C also boasts a 24-bit/192kHz upsampling capability. This technology enhances the resolution of audio playback, providing a smoother and more refined sound. By upsampling the audio signal, the player minimizes harmonic distortion and improves the overall listening experience, allowing users to hear their favorite CDs with new depth and richness.

The build quality of the 540C is another area where Cambridge Audio excels. Constructed with a robust chassis, the player is designed to reduce vibration and interference, which can negatively affect sound quality. This attention to detail is complemented by a sleek, minimalist aesthetic that blends seamlessly into any audio system.

Additionally, the 540C features a user-friendly interface, allowing for easy navigation through playlists and settings. The front panel includes a clear display that shows track information, making it simple for users to keep track of their listening experience. The remote control adds another layer of convenience, enabling the operation of the player from a distance without compromising functionality.

In terms of connectivity, the 540C is equipped with both digital and analog outputs, making it versatile when integrating with various sound systems. The inclusion of both coaxial and optical digital outputs allows users to connect directly to amplifiers or receivers that support digital inputs.

Overall, the Cambridge Audio 540C CD player stands out as an outstanding choice for audiophiles seeking top-tier performance in a compact package. With its exceptional DAC, upsampling capabilities, solid build quality, and user-friendly design, the 540C elevates the experience of enjoying music from CDs, making it a timeless addition to any serious audio collection. Its legacy of quality and performance continues to resonate with music enthusiasts around the world.