REAR PANEL CONNECTIONS

AC power socket

Once you have completed all connections to the amplifier, plug the AC Power Cable into an appropriate mains socket. Your Compact Disc player is now ready for use.

Line output

Use good quality interconnect cables from these sockets to any line level input on your amplifier.

Optical Digital output

Use this socket to connect to the input of a separate DAC or digital recording machine. Use a high quality TOSLINK fibre optic interconnect cable designed specifically for audio use.

Coaxial Digital output

This coaxial output is for input to a separate DAC or digital recording machine. Use a high quality 75 ohm digital RCA interconnect cable for this connection (not one designed for normal audio use).

FRONT PANEL CONTROLS

Standby/On

This control switches the unit from Standby mode to On.

Open/Close

Allows you to open and close the disc tray thus making it possible to load a disc. Pressing Play will also close the tray and start the CD.

Play/Pause

Plays the disc and pauses play.

Stop

Stops the CD playing.

Skip/Scan

Allows for skipping between tracks and also searching within tracks.

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Cambridge Audio 640C user manual Rear Panel Connections, Front Panel Controls

640C specifications

Cambridge Audio has long been known for producing high-quality audio products, and the 640C CD player exemplifies this commitment to excellence. First introduced in the early 2000s, the 640C garnered significant acclaim for its exceptional sound performance and robust build quality, making it a favorite among audiophiles and music enthusiasts.

At the heart of the 640C is its proprietary digital-to-analog converter (DAC). This DAC is key in delivering the rich, detailed sound that Cambridge Audio is renowned for. The 640C uses a high-quality Wolfson DAC, which is specifically designed to minimize distortion and maximize clarity, allowing listeners to fully appreciate the nuances in their music. This, combined with the player’s well-designed analog output stage, ensures that the sound produced is both informative and engaging.

One notable feature of the 640C is its dual-wolfson DAC architecture. This design allows the player to process both channels separately, significantly enhancing the stereo imaging and depth of sound. Coupled with a low-jitter clock, the player achieves precise timing, thus enhancing the overall resolution of the audio output. Users can expect crisp highs, detailed mids, and firm bass, which contribute to a balanced and natural sound profile.

Another technology that sets the 640C apart is its excellent build quality. Constructed with a solid metal chassis, the player is designed to minimize vibrations that can interfere with audio playback. The internal components are carefully mounted and shielded to further reduce interference and noise, ensuring that the audio signal remains pristine.

The 640C also features a user-friendly interface, with an intuitive remote control that allows easy navigation through CDs and track listings. The player is compatible with various disc formats, including standard audio CDs, CD-Rs, and CD-RWs, making it versatile for handling different media. The inclusion of a digital output enables users to connect the player to external DACs or digital audio systems, enhancing flexibility in audio setups.

In summary, the Cambridge Audio 640C CD player blends high-fidelity sound reproduction with thoughtful engineering and robust construction. Its dual-wolfson DAC setup and low-jitter technology provide exceptional audio quality, while its user-friendly design ensures easy operation. For those seeking a reliable, high-performance CD player, the 640C continues to stand out as a timeless choice in the expansive world of audio equipment.