Cambridge Audio Azur 640C (2003)
A CD player from Cambridge Audio's Azur series, launched in 2003. It has detailed sound and separate analogue and 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 in the lineup. Owners praise the build quality and the sound, which is crisp, detailed and rhythmic. Some say 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. The analogue and digital sections each get their own power supply. The output stage is built with discrete transistors instead of op-amps.
Market
Used prices for the Azur 640C currently run from £80 to £150, depending on condition. Common problems are dim or dead displays, noisy or failing transport mechanisms, and failing power supply capacitors. The Sony KSS-213C laser is a known wear item, and older units may need a new one. Some users report the player is sensitive to power quality and does better with an upgraded mains cable.
Market Value
┌──────────────────────────────────────────────────────────────────────────┐ │ CAMBRIDGE AUDIO AZUR 640C Nov 2026 │ ├──────────────────────────────────────────────────────────────────────────┤ │ High $234 Latest $192 │ │ Median $192 Trend — │ │ Low $139 Volume ~2/mo │ ├──────────────────────────────────────────────────────────────────────────┤ │ $300 ┤ │ │ │ │ │ │ │ │ $214 ┤ . │ │ │. . .│ │ │ │ │ │ . │ │ $100 ┤ │ │ ├─────────────────────────────────────────────────────────────────│ │ vol │█ █ █ █ █│ │ └─────────────────────────────────────────────────────────────────│ │ 2026-05 2026-06 2026-06│ └──────────────────────────────────────────────────────────────────────────┘
eBay completed sales. Excludes accessories, parts, and non-working units. Hover points for details.
eBay Listings
Recently sold on eBay: $139–$234 (median $192, based on 5 completed sales, past 12 months)
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