Bedienungsanleitung NAD M3e (Seite 5 von 20) (Englisch)

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ENGLISH

FRANÇAISDEUTSCHNEDERLANDSESPAÑOL

ITALIANO

PORTUGUÊS

SVENSKA

ANALOG SOUND, DIGITAL CONTROL

The M3 is NAD's concept of the ideal musical companion, capable of transporting the

listener to that place where the music simply exists in its own perfect space. For this

task we have pushed classical analog circuit design to unprecedented levels of

performance. The total lack of audible noise and distortion is the result of some very

sophisticated analog engineering, and rather surprisingly, the use of digital control.

Freed of the constraints of traditional analog switches, NAD's Director of Advanced

Development, Bjorn Erik Edvardsen devised an architecture using precision 1%

resistors controlled by digital switches for all the level adjustments required for volume

control, balance control and tone control. (Yes we still believe in tone controls - more

on that later.) Input selection is via precision sealed reed relays. A major advantage of

this architecture, in addition to its extremely precise performance, is the ability to place

controls in the most advantageous physical position within the circuit. The signal never

has to travel to the front panel for switching, as with traditional amplifier designs.

Getting to the infinitesimal levels of noise and distortion of the M3 requires very

careful circuit layout, as only tiny changes in the signal path can have large effects on

performance. Keeping signal paths as short as possible is also greatly aided by the use

of SMD (miniature surface mount) components and multi-layer PCBs (circuit boards).

LUXURIOUS STYLING AND INTELLIGENT CONTROL

The design brief reads: "The industrial design must create a physical presence that is

powerful, dynamic, and solid, yet refined and elegant". We wanted a design that will

still look fresh and new a decade from now, a design with classic proportions and

understated details. We also wanted an amplifier that was not only easy to operate,

but also very flexible and complete in its control options.

Unlike many high performance amplifiers, the M3 includes a full suite of convenience

features. Speaker switching for two pairs of speakers and very flexible tone controls

are provided, as is a Zone 2 output with its own independent set of commands and

dedicated ZR3 remote control. Front panel controls use a multi-function knob and

buttons to quickly navigate all amplifier functions. All operating conditions are clearly

displayed on a 2 line dot matrix VFD display. Direct access is available to many

functions via the M3 remote handset. The M3 handset also features basic controls for

the matching NAD DVD/SACD player.

Performance features include a multi-stage precision volume attenuator with 0.5dB

steps and a range of 87.5dB, a remote balance control with 0.5dB steps, and a Mode

control that allows stereo, left only, right only, and mono settings. Tone controls offer

bass and treble adjustment, as well as a 'spectral tilt' option that is highly effective at

correcting the tonal balance of many recordings by simultaneously increasing the bass

and decreasing the treble (and vice versa) to create a warmer (or cooler) balance. We

have also included a second set of preamp outputs and a switchable high pass filter

for the internal amplifier, to allow easy implementation of an active subwoofer or

biamplification.

The rugged chassis is built using thick 2mm mild steel plates with a front panel

employing extruded aluminium and die-cast zinc in its construction. Special attention

was paid to the control of mechanical resonance, as this can affect sonic performance.

Special isolation feet use aluminium and silicon rubber in a vibration damping

configuration. All signal connectors are heavy duty gold plated types specifically

engineered for the NAD Masters Series components. Finished inside and out, the M3

utilizes powder coating and advanced automotive paint finishes, creating an enduring

and elegant mechanical package.

PREAMP DESIGN

The preamp uses all discrete low noise high impedance J-FET buffer amps and very

high quality reed relay switches at the preamp input. Special high current low output

impedance Class A gain modules provide tremendous dynamic headroom and high

output current, combined with a exceptional S/N ratio in excess of -100dB (IHF).

About the M3 Dual Mono Integrated Amplifier:

Introduction

M3 10262005.qxd 1/3/2006 2:49 PM Page 5

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