Owner's Manual
INTRODUCTION
GETTING STARTED
THANK YOU FOR CHOOSING NAD.
M51 Direct Digital DAC is another excellent product that exemplies NAD’s
unique Direct Digital technology. The M51 uses a very powerful processing
engine that operates at much higher speed and with much greater
accuracy than typical D-to-A converters. Running at 108 MHz, the M51
resamples the incoming PCM (pulse code modulated) signal and converts
it to PWM (pulse width modulation) with a sampling rate of 844kHz. The
conversion process from PCM to PWM completely eliminates any jitter
present at the incoming signal. And because of M51’s very high speed clock
and mathematical precision of its reconstruction lters of M51, the resulting
audio signal is totally free of digital artifacts like ringing.
As with all our products, NAD’s “Music First” design philosophy guided
the M51 design that it can condently promise you both state-of-the-art
technology and audiophile-quality music listening for years to come.
We encourage you to take a few minutes now to read right through this
manual. Investing a little time here at the outset might save you a good
deal of time later, and is by far the best way to ensure that you make the
most of your investment in the M51.
One more thing: We urge you to register your M51 ownership on the NAD
Worldwide Web site:
http://NADelectronics.com/salon
For warranty information contact your local distributor.
NAD SHALL NOT BE HELD LIABLE FOR ANY TECHNICAL OR USER
INTERFACE DISCREPANCIES IN THIS MANUAL.THE M51 OWNER’S
MANUAL MAY BE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
CHECK OUT THE NAD WEBSITE FOR THE LATEST VERSION OF THE
M51 OWNER’S MANUAL.
WHAT’S IN THE BOX
Packed with your M51 you will nd
Masters Series Accessories box containing the following
• Two detachable mains power cord
• M50 remote control with 2 AA batteries
• M51 Quick Start Guide sheet
SAVE THE PACKAGING
Please save the box and all of the packaging in which your M51 arrived.
Should you move or otherwise need to transport your M51, this is by far the
safest container in which to do so. We’ve seen too many otherwise perfect
components damaged in transit for lack of a proper shipping carton, so
please: Save that box!
CHOOSING A LOCATION
Choose a location that is well ventilated (with at least several inches to both
sides and behind), and that will provide a clear line of sight, within 25 feet/8
meters, between the M51’s front panel and your primary listening/viewing
position - this will ensure reliable infrared remote control communications.
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