Naim NAC 552
Pre Amplifier (inc 552 PS DR)

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Naim NAC 552 Pre Amplifier (inc 552 PS DR)

Performance without limits.

Naim preamplifiers epitomise everything they believe in. Starting with the revolutionary NAC 12 back in 1974, Naim Audio preamplifiers have both rewritten the rules and set the standards for others to follow. The NAC 552 is second only to the Statement NAC S1: its distinctive two-box configuration marks it out from the competition just as surely as its unfettered musicality reflects Naim's core values. It's one of the best preamplifiers they have ever produced, and by extension, among the best in the world.


  • Two-box configuration for optimum rejection of electromagnetic interference
  • Split-rail power supply featuring 800VA toroidal transformer, three smoothing capacitors and new Discrete Regulator (DR)
  • Fully suspended sub-chassis for superior isolation of sensitive circuit boards
  • AV bypass mode for simple connection to an existing AV system
  • Support for both DIN and RCA inputs to facilitate connection into a wider range of systems
  • Independent listen and record banks for maximum flexibility
  • Assignable inputs for enhanced usability with a range of sources

Technology & Craft

Like every component in the flagship 500 Series range, the NAC 552 has been developed without compromise or constraint. Its two-box design, which houses the power supply components in a separate enclosure to better control electromagnetic interference, is classically Naim Audio. By contrast, the 552 PS DR power supply itself employs radically new thinking, including a new split-rail configuration that virtually eliminates power supply noise in the signal earth.

The sound-critical electronics of the NAC 552 are mounted on a brass sub-chassis, which is fully suspended on coil springs at a frequency below the threshold of human hearing. This method of suspension maximises isolation, hence minimizing the effect of vibration on the highly sensitive electronic components. Carefully selected precision rotary potentiometers with precious metal wipers are used to preserve music integrity and ensure long-term stability.

The NAC 552’s six inputs can be selected directly from either the front panel or the remote control. In addition to the usual DIN inputs, preferred for their superior earthing and impedance matching, the NAC 552 owner can configure two of the inputs for use with the more common RCA phono type connectors, enabling the use of alternative components with pre-owned interconnects.

Audio Inputs

Other InputsTwo inputs configurable for unity gain
Input Impedance47k Ohms
Analogue7 x DIN, 2 x RCA
Input Sensitivity75mV

Audio Outputs

Audio Outputs1 x variable, 3 x fixed (DIN)
Line Outputs Variable (level)775mV
Line Outputs Fixed (level)75mV, 600 Ohms
Load Impedance10k Ohms (min.)
Output Impedance<50 Ohms
Power OutputsNaim phono amplifier


RS232Optional (DE9 female)
Remote InputRCA on rear (RC5)


CaseBrushed and black anodised
FrontBrushed and black anodised


Weight12.9 kg
Dimensions (HxWxD)87 x 432 x 314 mm


Power Supply Options552 PS
Supply Voltage+/-12V, 24V, 32V

Supplied With

Supplied with552 PS, Power-Line, R-Com and Burndy


Power Supply552 PS

User Control

Front PanelVolume control, balance control, sixteen button matrix 
HandheldNARCOM-4 Remote Control
Remote ControlInfra Red (RC5)

Audio Outputs

Power Outputs7 x +/-12V, 1 x 12V, 2 x 24V, 1 x 31V


CaseBrushed and black anodised
FrontBrushed and black anodised


Shipping Weight17.5 kg
Shipping Dimensions240 x 590 x 500 mm
Dimensions (HxWxD)87 x 432 x 314 mm


Mains Supply100V, 115V, 230V; 50 or 60Hz

Supplied with

Supplied withR-Com, Power-Line, SNAIC

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