NAD M51 User Manual

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ENGLISHFRANÇAISESPAÑOLITALIANODEUTSCHNEDERLANDSSVENSKAРУССКИЙ

®

Owner’s Manual

M51

Direct Digital DAC

Table of Contents

Other manuals for NAD M51

Quick Start Guide2 pages

Questions and Answers:

P
Paul WilliamsJul 26, 2025
How to fix no USB audio on my NAD Media Converter?
- W
  William CruzJul 26, 2025
  If you're experiencing no USB audio with your NAD Media Converter, here are a few possible solutions: * Ensure the NAD USB Audio driver is installed on your PC. If not, download it from the NAD website and install it. * Verify that your PC or Mac's sound or audio device setting is set to “NAD Audio 2.0 Output”. * Make sure music files are being played back from your PC or Mac. * If using a Mac, ensure your OS is updated to include NAD USB Audio.
S
Stacey JohnsonAug 1, 2025
What to do if my NAD Media Converter M51 does not respond to the remote control?
- M
  Ms. Heather LiAug 2, 2025
  If your NAD Media Converter M51 is not responding to the remote control, consider the following: * Check the batteries to ensure they are not flat and are correctly inserted. * Make sure there is a clear line-of-sight between the remote control and the M51's infrared receiver (IR) window. Remove any obstructions. * Reduce bright sunlight or ambient light that may be interfering with the M51's front panel. * Verify that the remote control is set to the correct codes for the M51 Direct Digital DAC. Press and hold “5” and “1” at the same time until the remote control’s blue transmit LED flashes twice.
C
Cynthia RamirezAug 7, 2025
Why doesn't the volume control [VOL 5/6] work on my NAD M51 Media Converter remote?
- J
  Jennifer AdamsAug 7, 2025
  If the volume control [VOL 5/6] on your NAD Media Converter remote isn't working, check the “Volume Setup”. If it is set to “Fixed”, set it to “Variable”.
J
Jaime SmithAug 13, 2025
How to turn on NAD Media Converter M51 if it doesn't power ON?
- A
  Amber FloresAug 14, 2025
  If your NAD Media Converter M51 won't power on, check the rear panel POWER switch. If it's off, set it to “ON” and then press the front panel Standby button.
L
Laurie ArnoldAug 20, 2025
How to adjust the brightness if the VFD on my NAD M51 is dim?
- G
  gabriel15Aug 20, 2025
  If the VFD on your NAD Media Converter is dim, it might be due to a low brightness level being selected. Toggle the [DIM] button until you reach your desired brightness level.

NAD M51 Specifications

General

USB 1.1 ports quantity	2
Digital audio coaxial in	1
Certification	CE, RoSH
On/off switch	Yes
Product color	Silver

Weight and Dimensions

Weight	5800 g
Dimensions (WxDxH)	435 x 296 x 78 mm

Summary

Important Safety Instructions

General Safety and Operating Instructions

Read, retain, heed, and follow all safety and operating instructions.

Cleaning, Attachments, and Environment

Use dry cloth for cleaning; avoid unrecommended attachments and water exposure.

Installation and Placement Safety

Use stable surfaces, ensure proper ventilation, and avoid obstructions.

Power and Grounding Guidelines

Operate from correct power source, ensure proper grounding and cord protection.

External Connections Safety

Ground outdoor antennas, avoid power lines, do not overload outlets.

Service, Maintenance, and Disposal

Refer servicing to qualified personnel, use specified parts, and dispose of batteries responsibly.

Caution Regarding Placement

Ensure adequate ventilation space around the unit for proper airflow.

Environmental Protection and Disposal

Electrical Equipment Disposal

Dispose of product responsibly at designated recycling points.

Waste Battery Disposal Information

Follow regulations for separate collection and recycling of waste batteries.

Record Your Model Number

Note down model and serial numbers for future reference and warranty.

Introduction and Getting Started

About the NAD M51

Highlights NAD's Direct Digital technology and sound quality.

What's Included and Packaging

Details contents of the box and advice on saving packaging.

Choosing an Optimal Location

Guidance on selecting a well-ventilated location with clear line of sight.

Identification of Controls

Front Panel Controls Overview

Details of the standby button, LED, VFD, remote sensor, and input selection.

Rear Panel Connectivity

Description of analog and digital audio inputs, HDMI, USB, and control ports.

Rear Panel Power and Control Inputs

Details on trigger inputs, IR input, power switch, and AC mains connection.

M50 Remote Control Functions

Explanation of remote control buttons, compatibility, and mode selection.

Using the M51

NAD USB Audio Setup

Guide to streaming computer audio via USB, including driver installation.

Volume Setup Options

Configure volume control as Fixed or Variable for optimal audio output.

Polarity and Source Renaming

Adjust polarity and rename source inputs for personalized use.

Reference and Troubleshooting

Troubleshooting Common Issues

Solutions for common problems like no USB audio or remote control issues.

Factory Default Settings Restoration

Procedure to reset the M51 to its original factory default settings.

Specifications

Overall Performance Specifications

Detailed technical specifications for audio performance and output.

Power Consumption and Terminals

Power requirements and a list of all input/output terminals.

Physical Dimensions and Weight

Physical dimensions, net weight, and shipping weight of the M51 unit.

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