NAP 155 XS Power Amplifier

NAP 155 XS

NAP 155 XS Power Amplifier

The ideal partner for our NAC 152 XS preamplifier or NAC-N 172 XS streaming preamplifier, the NAP 155 XS features a substantial, custom-designed toroidal transformer with separate transformer windings for each output channel. It delivers 60 watts per channel (into 8 ohms) and will become the musical engine of a modern or traditional hi-fi system, whether the source is a digital stream, CD or vinyl.

  • 60W per channel output into 8 ohms
  • Internal power supply to allow direct connection of a NAC 152 XS, NAC 202 or NAC 282 preamplifier
  • Custom-designed toroidal transformer with separate transformer windings for each output channel
NAP 155 XS Power Amplifier
NAP 155 XS Power Amplifier  - Rear View
Technology & Craft

The NAP 155 XS is flexible enough to be used in most types of systems, both passive and active but retains an unwavering focus on performance.

The heart of the amplifier circuit is a version of the world class NAP 500 with a substantial and very quiet power supply using a custom-designed and manufactured toroidal transformer. Improvements over its predecessor, the NAP 150, include: a new toroidal transformer for improved regulation; separate windings for each channel and preamp; and an up-rated preamp power supply to improve the performance of the preamp.


Product Specification

Audio Inputs
Attribute Value
Analogue Input

1 x 4-pin DIN

Input Impedance


Audio Outputs
Attribute Value


Frequency Response

 -3dB at 3Hz - 50kHz

Power Outputs

Naim pre-amplifier

Minimum Load Impedance





Signal-to-Noise Ratio


Speaker Outputs
Attribute Value
Speaker Outputs

L & R, 4mm “banana” sockets

Power Output

60W/channel, 8Ω



Attribute Value
Mains Supply

100V, 115V, 230V; 50 or 60Hz

Power Consumption (quiescent)


Power Consumption

330VA (max.)

Attribute Value
Dimensions (HxWxD)

70 x 432 x 301 mm


7.9 kg

Shipping Dimensions

200 x 590 x 500 mm

Shipping Weight

10.5 kg

Supplied with

SNAIC, Power-Line Lite mains cable (UK denominations only)

Attribute Value

Brushed and black anodised


Black powder coated

Suggested System

A Naim Audio Retailer will recommend the right system for you, however you may choose to partner the NAP 155 XS with the following as a start:

  • ND5 XS
  • CD5 XS

Manuals & Downloads

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