Naim CD555 CD Player

Naim CD555 CD Player

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Naim CD555 CD Player

If you are looking for the ultimate performance from a CD player, then the Naim CD555 is a great place to start. Devoid of unnecessary features, the CD555 has no digital output, no variable analog output, will only play red book CD's (no SACD/ DVD/Blu-ray discs), it simply concentrates on extracting every last detail ofthe music contained on your discs.

Key features of this fabulous player include a separate power supply from a transformer secondary winding, which is triple regulated, right through to the critical master clock and de-jittering circuitry. Special attention has also been paid to reducing capacitive coupling of high frequency noise from other supplies into this super quiet clock supply through interconnect cables and wiring looms. Two Burndy interconnects between the power supply and head unit discretely carry the digital and analogue supplies, and extend the principle of reducing capacitive coupling between power supplies as far as possible.

The power supply incorporates significant upgrades over existing designs. More regulators have been used to isolate the supplies to various parts of the circuit, minimising their interaction.

The CD555 Digital-to-Analogue Converters are mounted in a "quiet room". Apart from ensuring that all critical signals reaching the DAC have immeasurably low jitter the chips are inside a shielded enclosure to keep their environment free of the varying electric and magnetic fields that inevitably occur in a CD player, so enabling the converters to do their work, isolated from all external influences.

Other noteworthy design features of the CD555 include:

Machined, heavy, solid, transport tray to reduce resonance and vibration amplitude.
High mass design to improve suspension characteristics, providing isolation from the chassis and other components.
Low infra red reflective coatings around the CD to reduce eye pattern interference and noise.
Extremely low inertia and low resonance CD clamp.
Philips CD-Pro mechanism with a die-cast chassis.
Very heavy brass sub-chassis - separate for digital and analogue electronics.
Analogue stages, I-to-V conversion, filtering and output driver are built from discrete components.
Seven-pole output filters.
Separate low jitter clock circuit with its own multi-stage regulated power supply.
Post-digital filter de-jitter circuitry to eliminate jitter.
DAC's are isolated from electric and magnetic fields.
Motorised top loading door.

Design features of the 555 PS include:

Seven regulated power supplies including a separate one for the clock circuitry.
Five secondary windings on the transformer.
A transformer that is 40 per cent larger than that in the XPS2.
Separate dedicated analogue and digital output sockets (Burndy) to minimise high frequency noise modulation of analogue supplies.
Backward compatibility with the CDS3 and CDX2.
Can be used to enhance the performance of the Naim HDX hard disk player or DAC.
A low resonance case with isolating feet.



Analogue Outputs     DIN, RCA
Line Outputs Fixed (level)     2.1V rms at 1kHz
Output Impedance     10Ω maximum
Minimum Load Impedance     10kΩ
Frequency Response     10Hz – 20kHz, +0.1/-0.5dB
thd+n     <0.1%, 10Hz -18kHz at full level
Phase Response     Linear phase, absolute phase correct
De-emphasis     ±0.1dB referred to main response
Infra Red     RC5
Remote Input     RCA on rear (RC5)
RS232     RJ45 (fitted but optionally connected)
CD Formats     Red Book
Disc Compatibility     CD, CD-R, CD-RW
Power Supply Options     555PS, 2 x 555PS
Dimensions     114 x 432 x 314mm (H x W x D)
Front     Brushed and black anodised
Case     Brushed and black anodised


Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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