Cambridge Audio Azur 640C (2003)

A CD player from Cambridge Audio's Azur series, launched in 2003 with a focus on detailed sound and separated analogue/digital circuitry.

Overview

The Cambridge Audio Azur 640C is a CD player launched in 2003 as part of the Azur series. It was originally priced at £300 and sits between the 540C and 740C models in the product lineup. Known for its crisp, detailed, and rhythmic sound, the 640C is praised by owners for its build quality and audio performance, though some note it can sound bright with certain recordings.

Specifications

Frequency response	20Hz-20kHz ±0.5dB
THD	<0.002%
S/N ratio	>110dB
Channel separation	>100dB
Digital outputs	Coaxial, Toslink
Analogue outputs	2x RCA
Dimensions (WxHxD)	430 x 85 x 315mm
Weight	5.5kg
Power consumption	25W

Design

The Azur 640C uses a Wolfson WM8740 24-bit/192kHz DAC and a Sony KSS-213C transport mechanism. It features a separate power supply for the analogue and digital sections, and the output stage is built with discrete transistors instead of op-amps.

Market

Current used prices for the Azur 640C range from £80 to £150, depending on condition. Common issues include dimming or failed displays, noisy or failing transport mechanisms, and failing power supply capacitors. The Sony KSS-213C laser is a known wear item and may require replacement in older units. Some users report the player is sensitive to power quality and performs better with an upgraded mains cable.