NAD C350 User Manual

NAD has always had a formidable reputation when it comes to quality, budget
amplifiers. The NAD 3020 in its various guises, and more recently the NAD
C320 and C340 all have received world-wide accolades for their outstanding
musical performance and superb value. As an encore NAD is proud to pre­sent a new amplifier, further enhancing that reputation: the C350.

Features:

The C350 is fully remote controlled and comes supplied with the NAD C
Series system remote control. As the C350 has NAD Link the remote control
will also operate many other NAD products such as CD players, tuners, etc.

Flexibility is another NAD strong point. The C350 has 7 line inputs (including
2 tape in/outputs with dubbing facility) and the pre-amplifier section can be
separated from the power amplifier for easy upgrades or adding ancillary
equipment. Thus the C350 can be expanded to meet future system needs.
The C350 sports 2 pre-amp outputs: Many systems benefit from the use of
multiple power amplifiers for "Bi-Amping" (using separate power amplifiers
to drive the bass and treble section of a loudspeaker). With the second Pre­out 2 facility an extra power amplifier, such as NAD's forthcoming C270
which has identical amplification factor (gain) as the C350's power amp sec­tion- is easily connected.

For remote on/off switching of ancillary components in a system, such as
power amplifiers or active speakers, the C350 is equipped with a 12V-trigger
system. When switching the amplifier on, the 12V- trigger output is also acti­vated which in turn can activate a 12V-trigger input and switch on the remote
devices. Besides the 12V-trigger, the C350 also has an AC switched outlet
(North American version only) so you can easily switch your entire system
on or off with the remote control or from the front panel.

It is fashionable to omit tone controls nowadays: However, provided that the
tone controls are properly designed, they can be really useful tools in making
improvements to the overall sound. The C350 tone controls only work at the
frequency extremes leaving the critical mid-band essentially unaltered. The tone

control circuits can be completely bypassed by using the tone defeat switch.
The C350 also incorporates NAD's acclaimed switchable "Soft Clipping" cir­cuit, which significantly reduces the risk of damage to loudspeakers due to
prolonged high power operation.

Design: Impedance Sensing Circuit (ISC):

The C350 also benefits from NAD's proprietary Impedance Sensing Circuit
(ISC) topology, now well established and used throughout the NAD product
range notably in the highly reviewed models such as the C320 and C340. The
ISC topology allows the C350 to deliver maximum performance under virtu­ally any circumstance, independent of the loudspeakers it is driving. The cir­cuitry automatically senses the impedance characteristics of the loudspeaker
and will then adjust its power supply settings to best cope with that specific
load. This also gives it an unusual characteristic compared to traditional
amplifiers when measuring its continuous output power; the RMS output
power remains the same at 60 Watts with either an eight or four ohms load.
This is not unusual for NAD however.

NAD takes a stance to the mindless "brochure power" approach which doesn't
give a realistic indication of an amplifier's true capabilities. Instead, the ISC
topology is a practical approach to enable an amplifier to easily deal with
dynamics and difficult loads. More meaningful are the C350's dynamic capabil­ities; up to 240 Watts into 2 ohms and up to 55 amps peak current capability!

Other design features include relay input switching (located right behind the
input sockets for short signal paths) and the large Toroidal transformer (less
mechanical hum and stray magnetic field). The generous power supply and
over-specified output devices further lead to low noise and low distortion for
the entire amplifier. Like all the other in- and output sockets, the Pre­out/Main-in sockets are gold plated for long-term contact reliability. The
headphone socket will drive virtually any non-electrostatic headphone.

C350 Stereo Integrated Amplifier

• 60W x 2 Continuous Power into 8 ohms • 135W, 190W, 240W IHF Dynamic power
into 8, 4 and 2 ohms, respectively • Impedance Sensing Circuit (ISC) topology

• Full System Remote control including Stand-by/Off • Headphones socket

• Relay Input Switching • Toroidal Power transformer • 7 Line inputs, including

two tape in/outs • All discrete circuitry • Short signal path from input to output

• All sockets Gold plated • Tone controls defeat switch • Main-amp input
& 2 pre-amp outputs • Soft Clipping

TM

• NAD Link • 12 volt trigger output

NOTE: NAD Electronics International reserves the right to change specifications or features without notice as design improvements are incorporated.

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.

Printed in Canada. © NAD Electronics International 02/01.

PROVISIONAL SPECIFICATIONS - NAD C350

Power Amp Section

Continuous Average Power Output into 8

Ω

60W (17.8dBW)

(Min. power per channel, 20Hz - 20kHz both channels driven with no more than rated distortion)

Rated distortion (THD 20Hz-20kHz)) 0.03%
Clipping power

(max. continuous power per channel) 70W(18.5dBW)

IHF dynamic headroom at 8

Ω

3.5dB

IHF dynamic power 8

Ω

135W (21.3dBW)

4

Ω

190W (22.8dBW)

2

Ω

240W (23.8dBW)

Damping factor (ref. 8

Ω

, 50Hz) >150

Input impedance R and C 20k

Ω

/ 470pF
Input sensitivity ref. rated power 770mA
Voltage gain 29dB
Frequency response 20Hz-20kHz +/-0.3dB

3Hz/70kHz -3dB

Signal/noise ratio A weighted; ref. 1W >96dB

A weighted; ref. rated power >114dB

Overall Line in, Speaker out

Sensitivity; max vol. re. rated power 250mV
Signal/noise ratio ref 1W >96dB
Signal/noise ratio ref rated power >114dB
THD from 0.25W to rated power <0.03%

Pre-amp Section

Line Level Inputs

Input impedance R and C 50kΩ/ 320pF
Input sensitivity ref. rated power 325mV
Frequency response 20Hz-20kHz +/-0.3dB

Line Level Outputs

Pre-amp fixed output 100

Ω

Tape Z Source + 1k

Ω

Phones 220

Ω

Signal/noise ratio re 0.5V in and 0.5V out >106dB
Remote control Yes

Physical Specifications

Dimensions (W x H x D) 17

1/8

x 3

15/16

x 11

7/16

"

(435 x 100 x 290mm)
Net weight 15.45 lbs (7.01kg)
Shipping weight 19.0 lbs (8.62kg)