Naim Audio NAC 552 Preamplifier

Description

Naim Audio NAC 552 Preamplifier

The Naim Audio NAC 552 Preamplifier is considered among the best in the world and pairs well with Focal.

FAQ’s

• What is the NAC 552 and what does it do?
  The Naim Audio NAC 552 is a high-end stereo preamplifier. Its core job is to take the weak audio signals from your sources (CD player, streamer, DAC, etc.) and control, shape, and amplify them cleanly before sending that signal on to a power amplifier and then your speakers. In doing so, it preserves detail, dynamics, and musical fidelity so the system sounds its best.
• Why does it have a separate power supply and two-box design?
  The NAC 552 uses a separate external power supply (called the 552 PS) in a two-box configuration. This reduces electromagnetic interference and power noise reaching the sensitive audio electronics, which improves clarity and reduces distortion. That means the audio signal is cleaner and more stable than if the power supply were built into the same box.
• How does the NAC 552 control signal routing and inputs?
  It has multiple assignable inputs and both DIN and RCA connectors, letting you connect many sources and then choose, map, and switch between them from the front panel or remote. It also includes independent listen and record outputs so you can send signals to recording gear while still controlling the main listening output.
• What role does volume and balance control play?
  Instead of simply passing through audio, a preamplifier like the NAC 552 precisely adjusts volume and balance between left and right channels. It also conditions the signal so that the power amplifier that follows gets a controlled, consistent voltage reference. This ensures smooth level control and accurate stereo imaging.
• Does the NAC 552 include a phono input?
  No, the NAC 552 doesn’t have a built-in phono stage for turntables. If you want to connect a turntable, you need a separate phono preamplifier to boost and equalize the very low-level signal from a phono cartridge to line level before it goes into the NAC 552.
• Why do I need a preamp at all?
  A standalone preamplifier like the NAC 552 improves sound quality by: amplifying weak audio signals with minimal noise, providing flexible source selection and signal routing, and offering precise volume and balance control without degrading the audio.

Features

• The two-box configuration is optimal for rejecting electromagnetic interference.
• The split-rail power supply features an 800VA toroidal transformer, three smoothing capacitors, and a new Discrete Regulator (DR).
• The fully suspended sub-chassis provides superior isolation of sensitive circuit boards.
• The AV bypass mode simplifies connection to an existing AV system.
• Both DIN and RCA inputs are supported to facilitate connection to a wider range of systems.
• Independent listen and record banks provide maximum flexibility.
• Assignable inputs enhance usability with a range of sources.

Technology & Craft

Every component in the Naim flagship 500 Series range, including the NAC 552, has been developed using the latest technology and the finest materials available.

They’ve gone to great lengths to ensure that the two-box design is a true reflection of Naim Audio’s classic style, with the power supply components housed in a separate enclosure to achieve minimal electromagnetic interference.

The NAC 552 has sensitive electronics mounted on a brass sub-chassis and fully suspended on coil springs to minimize the impact of vibration. Precision rotary potentiometers maintain musical integrity and ensure long-term stability. The device has six inputs that can be selected from the front panel or remote control, including two RCA phono-type connectors for alternative components.

YOUR FOCAL & NAIM SYSTEM

To get the most out of the NAC 552 and enjoy exceptional listening, pair it with speakers from the Utopia range: Maestro, Scala or the Sopra range.

• Stella Utopia Evo – 3-way floor-standing speaker   + Discover

Specifications

Inputs/Outputs Specifications

• Analogue gain : 29dB / Max volume at 22dB
• Analogue inputs :
  • 7 x DIN,
  • 2 x RCA
• Other inputs : Two inputs configurable for unity gain

Power Supply

• Consumption in normal use : 15 W
• Mains cable : PowerLine
• Mains power supply : 115V or 230V, 50/60Hz

Design

• Depth : 314 mm / 12.3 in
• Height : 87 mm / 3.4 in
• Width : 432 mm / 13.4 in
• Weight : 12.9 kg /

Compatibility

• Power Supply Options : 552 PS

Included Accessories

• Cables provided : Remote, Burndy Cable, Snaic 5 Cable, Batteries