First shown and demonstrated at The Hi-fi and Home Entertainment Show at Heathrow in September 2005, Naim's reference CD player, the CD555 with 555 PS delivers the ultimate musical performance from a CD.
The CD555 makes no attempt to play DVDs, DVD-As or SACDs. It does not have a digital output. Nor does it have a variable output. The CD555 simply plays CDs and at that it excels. We are confident that it is the best CD player ever.
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:
Design features of the 555 PS include:
|Analogue Outputs||DIN, RCA|
|Line Outputs Fixed (level)||2.1V rms at 1kHz|
|Output Impedance||10Ω (max.)|
|Load Impedance||10kΩ (min.)|
|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|
|Remote Input||RCA on rear (RC5)|
|RS232||RJ45 (fitted but optionally connected)|
|Remote Control||Infra Red (RC5)|
|CD Formats||Red Book|
|Disc Compatibility||CD, CD-R, CD-RW|
|USER CONTROL INTERFACES|
|Front Panel||Seven buttons|
|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|
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