Naim NAC 52 Preamplifier with NAC52PS Power Supply + ‘K’ 523 Phono Boards

A superb example of the highly regarded Naim NAC 52 preamplifier, supplied with its matching NAC52PS power supply. This unit includes the desirable ‘K’ (523) phono boards, making it an excellent choice for vinyl enthusiasts using moving magnet (MM) cartridges.

What are ‘K’ (523) Phono Boards?
The ‘K’ boards (type 523) are Naim’s plug-in phono stage modules designed specifically for moving magnet cartridges. They provide precise RIAA equalisation and are known for their dynamic, engaging sound, maintaining the musicality Naim is famous for.

Condition
Preowned in excellent condition with only minor cosmetic blemishes, as shown in photographs.

Service History
Both the NAC 52 and NAC52PS have been professionally serviced, with 60+ capacitors replaced.
Tested and confirmed fully working.

Additional Information
These units were originally built for a Naim staff member, which is why they carry non-standard serial numbers.

Key Specifications (NAC 52)

• Type: Reference analogue preamplifier

• Inputs: Multiple line-level inputs + plug-in phono stage capability

• Phono Stage: Supports Naim plug-in boards (including included 523 ‘K’ boards for MM cartridges)

• Output: DIN connections (standard for Naim systems)

• Power Supply: External NAC52PS (included)

• Control: Remote controlled (via system integration)

• Build: Dual-chassis design for optimal signal isolation and performance

Highlights

• Flagship classic Naim preamp

• Includes matching dedicated power supply (NAC52PS)

• Fitted with sought-after ‘K’ MM phono boards

• Recently serviced for reliability and longevity

• Rare staff-built unit with non-standard serial numbers

• Renowned for exceptional timing, clarity, and musical engagement

Shipping

• Free UK postage via DPD

• International shipping via eBay Global Shipping Programme (GSP)

• Alternative couriers available on request (DHL, UPS, FedEx)

A rare opportunity to own one of Naim’s most iconic preamplifiers in excellent, fully serviced condition.

Please feel free to ask any questions.