Page 1
Features
While 150W is very powerful for home use, there
can never be too much power if you like your music
loud and clear. An option to add more power in the
future is to bridge the C 275BEE and add a matching
C 275BEE for one of the most powerful home audio
systems youll ever encounter. Power goes from 150W
x 2 to over 400W x 2! This also has the additional
bene t of being dual mono, meaning each channel
and each speaker is totally isolated from the effect of
the other.
The C 275BEE is equipped with NADs ATOLogic
circuit which includes both a 12V-trigger system and
signal-sensing turn ON option. This extra level of
exibility makes it easy to integrate the C 275BEE into
automated control systems or simply enjoy the extra
convenience of auto turn ON. Consumption is a very
low <1W when in Standby mode.
Design: PowerDrive
The C 275BEE also bene ts from NADs proprietary
PowerDrive circuit topology, now well established
and used throughout the NAD product range.
The PowerDrive topology allows the C 2 75BEE 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 speci c load. PowerDrive
TM topology is a practical
approach to enable an ampli er to easily deal with
musical dynamics and dif cult speaker loads. Thus
we have the highly desirable characteristics of high dynamic power and low impedance drive capability in
one affordable package.
Getting high dynamic power from the power supply to
your loudspeaker requires a fast wideband ampli er
stage rugged enough to pass and control high peak
currents without premature protection intervening.
The safe operating limit for the C 275BEE has 4
times the capacity of the typical ampli er in this price
range by using 4 pairs of 220W output transistors
per channel.
The C 275BEE has the lowest levels of distortion and
noise available in its price class and is easily capable of
embarrassing far more expensive products. To prove it
NAD uses Full Disclosure Power, the most demanding
criteria for performance measurement. FDP speci es
distortion under the most extreme conditions of low
impedance loads and frequency extremes rather than
the simple and easy 1kHz @ 8 Ohms test quoted
by many of our competitors. We use this stricter
performance criterion because it more closely matches
the demands of real music and real loudspeakers.
Maintaining speci ed distortion at 4 Ohms and at
20Hz and 20kHz is several orders of magnitude
more dif cult to achieve than the simple 8 Ohms
and 1kHz test.
NAD also takes a stand against the meaningless
brochure power touted by many of our competitors
by offering Full Disclosure power specs. We specify
minimum continuous power, across the entire audible
range of frequencies, at rated distortion, for both 8 and 4 Ohms with all channels driven simultaneously.
Perhaps even more importantly, we also specify
Dynamic Power at 8, 4, and even 2 Ohms, which better
describes the way the ampli er will perform in the
real world, with musical signals and reactive
loudspeaker loads.
Less Distortion = More Music
Noise and distortion mask the ne details of a musical
recording robbing musical texture and dimension and
replacing them with non-musical artifacts. NAD has
spent the last 35 years perfecting our designs to have
the lowest distortion and highest power in its price
class. This cannot be overstated! Our competitors
often rate distortion at only 80% of rated power, and
even then cant match our very conservative spec of
0.008% at any frequency within the range of human
hearing. Our noise spec is often 10dB (100 times!)
less than that of competing ampli ers. This is far
from a trivial difference as ne detail and nuance
(micro dynamics) are often obscured by noise in lesser
ampli ers, robbing a performance of that illusive sense
of realism. It is that exciting feeling of being there at
the live performance.
But even the most carefully reported specs cannot fully
describe the sonic performance of an ampli er. Only
your own ears can nally judge our achievement. We
urge you to listen and compare NAD to other products
in its price range, and even higher. We dont think
youll nd anything that comes close to offering the
C 275BEEs overall musical satisfaction, well-rounded
performance, and stellar value for money.
> DETAILS
NAD Electronics International reserves the right to change speciο¬
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 tr ansmitted in any form whatsoever without the written
permission of NAD Electronics International. Β© 10/08 NAD Electronics International.
www.NADelectronics.com
Page 2
C 275BEE Stereo Power Amplifier
> SPECIFICATIONS
Overall Specifications
Fixed IN, Speaker OUT
Continuous output power into 8 -¦
and 4 -¦ (both channels driven) >150 W (ref. rated THD,
20 Hz - 20 kHz)
Continuous output power into 8 -¦
(Mono, Bridge mode) >330 W (ref. 20 Hz - 20 kHz,
<0.02% THD)
Rated THD (250 mW to
rated power, CCIF IMD,
DIM 100) <0.008 % (ref. 20 Hz - 20 kHz)
Clipping power (4 -¦ and 8 -¦) >170 W (ref. 1 kHz 1% THD)
IHF dynamic power 8 -¦ 250 W
4 -¦ 410 W
2 -¦ 600 W
IHF dynamic power
(Bridge mode) 8 -¦ 800 W
4 -¦ 1200 W
Peak output current >50 A (ref. 1 -¦, 1 ms)
Signal/Noise ratio >102 dB (A-weighted, ref. 1 W)
>123 dB (A-weighted, ref. 150 W)
Damping factor >180 (ref. 8 -¦, 50 Hz and 1 kHz)
Frequency response Β± 0.1 dB (ref. 20 Hz - 20 kHz)
3 Hz - 100 kHz (ref. -3 dB)
Input impedance (Fixed IN) 10 k-¦ + 200 pF
Input impedance (Variable IN) 100 k-¦ + 100 pF
Input Sensitivity
1-2v (ref. rated power)
Voltage gain 29 dB
Minimum input level for
AUTO TRIGGER 10 mV at 1 kHz
Time to power OFF at
no signal in AUTO mode <10 minutes
Power Consumption
Normal operation 312 W (ref. 230V AC 50 Hz;
120V AC 60 Hz)
Standby power <1 W
Idle power <100 W
Dimension and Weight
Dimensions (W x H x D)
Net 435 x 133 x 352 mm
17 1/8 x 5 1/4 x 13 3/4
Gross 435 x 150 x 378 mm
17 1/8 x 6 x 15
Net weight 32.2 lbs (14.6 kg)
Shipping
weight 37.3 lbs (16.9 kg)
* Gross Dimensions include volume knob / speaker terminals / connectors / feet.
Note: Installers should allow a minimum clearance of 2 - 4 inches for
wire management.
> REAR LINE DRAWING
