Naim CD555 specs

AUDIO OUTPUTS:
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

CONTROL:
Infra Red - RC5
Remote Input - RCA on rear (RC5)
RS232 - RJ45 (fitted but optionally connected)

FORMATS:
CD Formats - Red Book
Disc Compatibility - CD, CD-R, CD-RW

POWER:
Power Supply Options - 555PS, 2 x 555PS

PHYSICAL:
Dimensions - 114 x 432 x 314mm (H x W x D)

FINISH:
Front - Brushed and black anodised
Case - Brushed and black anodised

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.

DACs 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.