NAD C 390DD User Manual

C 390DD Direct Digital Powered

DAC/Amplier

Our C 390DD DAC/Amplier is a new concept in amplication and in high denition audio system architecture. Featuring Direct
Digital™ technology rst introduced in our now famous M2 Direct Digital™ Amplier, the C 390DD will amaze with its transparent,
dynamic and detailed sound quality. The most accurate DAC/amplier ever devised, the C 390DD is packed with loads of power, MDC
upgradability, software dened operation (offering simple software updates), and exclusive NAD features. Rethink how a music
system should look and sound.

2 x 150W

Features

> Revolutionary Direct Digital™ Technology

The C 390DD’s proprietary Direct Digital™ technology has no
analogue stages in the signal path, keeping music in the digital
domain right up to the speaker outputs. Preamp functions occur in
the digital domain without the phase shift, noise, and distortion that
plagues all analogue designs. A 35-bit architecture and a 108MHz
master clock also make Direct Digital™ one of the most accurate
DAC technologies available. Direct Digital™ also includes a large
amount of DSP processing power, which we have fully exploited
to give you extra useful features.

> Immense Power

The C 390DD has a very high continuous power rating of 150W
per channel with almost immeasurable distortion and noise. Our
exclusive Digital PowerDrive™ circuit senses the speaker load
and alters amplier characteristics to enhance power delivery
into your loudspeakers with great efciency. Digital PowerDrive™
can more than triple the C 390DD’s rated power while effortlessly
reproducing musical transients with accuracy.

> New System Architecture

The C 390DD performs the functions of multiple conventional
components, so you can change the way your music system is
congured. The C 390DD is ready for the world of computer audio
with its asynchronous USB input that can directly play 24/192
content from your computer. Connections in front and rear
support USB portable ash memory devices and external hard
drives (FAT32).

> Modular Design Construction (MDC)

A pure digital system has many advantages, but one drawback
is the constantly changing delivery formats for digital
content. For this reason, we developed MDC, which places
all digital interface circuitry on replaceable modules. The
C 390DD now comes standard with one DD USB-2 Module for
USB interface, with room for two more modules. Current options
are the DD HDM-1 Module (three HDMI inputs, one output), and
the DD AP-1 Module with phono preamp for analogue source
compatibility with the C 390DD’s pure digital circuitry.

> Exclusive Room EQ

Room EQ is our simple solution to problematic ‘room modes’ or
‘standing waves’ that result in undesirable ‘boomy’ bass. Playing
back a supplied test tone sequence easily tames this problem by
using your ears and the C 390DD Room EQ lters. Six frequency
centres in the low bass region can be cut (or slightly boosted)
to remove the ‘boom’ without reducing the low bass response.

> Advanced Integration

The C 390DD comes standard with eight inputs, which can
be expanded to 14 with the optional MDC modules. Inputs can
be activated or hidden, and can be renamed for the source
component attached. Listening Mode, Polarity, and NAD Soft
Clipping are all easily selected and adjusted. RS-232,
IR Inputs/Outputs and 12V triggers all make integration with
home automations systems simple and effective.

DD AP-1
Optional

MDC Module

DD HDMI-1

Optional

MDC Module

C 390DD

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NA

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Direct Digital Inte grated Amplifi er C 39 0DD

Specications

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Total Width 435mm

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VOLUME

SOURCE

Total Height

132mm

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Total Depth 388mm

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DIGITAL INPUT (COAXIAL, OPTICAL, USB) C 390DD

Input Impedance

75 ohms (coaxial)

110 ohms (AES/EBU)
Sample Rate 32kHz to 192kHz
Frequency Response ±0.5dB (ref. 20Hz-96kHz @ 192kHz

)

Channel Separation >90dB (ref. 10kHz, 4 ohm, 1/3 rated power)

OVERALL SPECIFICATIONS

Continuous Output Power (ref. 20Hz - 20kHz, rated THD)

8 o h m

4 ohm

≥150W

≥150W
Rated Distortion (THD, with AES17 and AP passive 20kHz LP lters) <0.005% (ref. 20Hz - 20kHz, 500mW - rated power)
Clipping Power >165W (ref. 1kHz, 8 ohm, 0.1% THD)
IHF Dynamic Power 8 ohm

4 ohm

160W

350W
Maximum Output Current >18A
Signal / Noise Ratio >95dB (A-weighted, ref. 1W)

>124dB (A-weighted, ref. 250W)
Damping Factor >800 (ref. 20Hz - 200Hz)

GENERAL

Idle Power 100W
Standby Power <0.5W
Unit Dimensions

(WxHxD) -

Gross* 435 x 132 x 388mm

17 1/8 x 5 1/4 x 15 5/16 inches**
Net Weight 7.7kg (16.94lb)
Shipping Weight 9.78kg (21.5lb)

* Gross dimensions include feet, extended buttons and rear panel terminals.
** Non-metric measurements are approximate. NAD Electronics will not assume any liability for errors being made by retailers, custom installers,

cabinet makers, or other end users based on information contained in this document.

Note: Installers should allow a minimum clearance of 55mm for wire/cable management.

NAD Electronics International reserves the right to change specications or features without notice. NAD is a registered trademark of NAD
Electronics International. All rights reserved. No part of this publication may be reproduced, stored, or transmitted in any form whatsoever
without the written permission of NAD Electronics International. © 04/14 14-039 NAD Electronics International.

www.NADelectronics.com