Description
Redefining the State of the Art with Purifi Technology
NAD has introduced some of the most innovative amplifier
technology in its nearly 50 year history, starting with the 3020 on through
such cutting edge models as the 2200, the 208, and the M2. Now we are making
the amazing new Eigentakt™ (self-clocking) technology, recently introduced to
the world in the EISA Award winning Masters M33, available to a wider audience
with the very affordable C 298. We are thrilled to provide this unprecedented
level of performance. In short, a perfect companion for the C 658 BluOS
Streaming DAC pre-amp.
Powerful. Efficient. Eigentakt™
Amazing Flexibility
The C 298 may be a basic Power Amp, but we have carefully
thought through all the use cases typically encountered to create a rich
feature content. Selectable balanced inputs make the C 298 a natural for studio
use or connection to High End Preamps and Processors. These inputs include a
trim control useful for matching to other components. A line out allows further
addition of power on the same channel for additional speakers or subwoofers.
Auto-sense with selectable threshold is perfect for automating complex systems
or hiding the amp out of sight in a cabinet. We even include a Ground Lug that
can be very useful for eliminating ground loops and noise in complex multi-unit
systems. Added to all this connectivity is a Bridge Switch that turns the C 298
into an amazingly powerful Monobloc Amplifier. Start with one and add a second
C 298 later when you upgrade your speakers.
Getting the Basics Right
It is surprising how many seemingly advanced products in the
market today often miss many of the most basic requirements for satisfying
performance. Low noise circuits, accurate channel balance, proper input and
output impedance characteristics, high overload margins and stability with
difficult speaker loads. NAD starts by getting these things precisely right and
advances from there. Our line inputs, both Balanced and Single-ended, can
accommodate all kinds of analog source components by offering ideal input
impedance characteristics with linear ultra-low-noise buffer amplifiers to
prevent any sonic degradation caused by inappropriate loading of the source
device. These are all details you can hear.
Sophisticated Power
NAD has moved away from the old fashioned and very power
hungry linear power supplies and Class AB output stages that waste nearly half
of the energy consumed producing heat rather than sound. Instead we have
developed even better performing circuits based on switch mode power supplies
and Class D output stages. Once thought to be inferior to traditional
topologies, NAD’s advanced work in this area has created some of the best
performing amplifiers regardless of basic design principle. These new designs
are very linear over a wide bandwidth and provide consistent performance into
all speaker loads, providing a dramatic advance over previous models.
The generously dimensioned power supply easily allows for
185 watts continuous and over 570 watts instantaneous power for short term
musical transients. Innovative Asymmetrical Power-Drive fully utilizes every
last watt available with its vast reserves of dynamic power available to
accurately reproduce musical transients without distortion or compression. It
can operate with any AC mains voltage from 100v to 240v and provides pure DC
power to all the various stages of the C 298. This highly efficient supply also
provides near perfect regulation of voltage across a wide range of conditions
and provides a solid noise-free foundation for the amplifying stages.
Purifi ‘Eigentakt’ Amplifier Technology
Purifi is a Danish technology company that has brought
together several of the industry’s leading engineers to apply advanced
mathematical modelling to solve the last remaining limitations of audio
amplifiers. While there are many good sounding amplifiers on the market today,
Purifi has taken a fresh look at every aspect of amplifier performance and
found many seemingly small non-linearities that can make a dramatic difference
in the overall sound. This return to first principles has resulted in a
stunningly simple approach to some remarkably complex problems. With features
and technology unmatched by other amplifiers in its class, the C 298 amplifier
is an easy upgrade for any system and a surprising partner for the most
sophisticated and advanced loudspeakers on the market.
Features
- 185W x
2 Rated Output Power into 8 Ohms
- 340W x
2 Rated Output Power into 4 Ohms
- Stereo
Dynamic Power 260/490/570W @ 8/4/2 Ohms
- 620W x
1 Rated Output into 8 Ohms Bridge Mode
- Mono
Dynamic Power 1000/1100W @ 8/4 Ohms
- Purifi
Eigentakt™ Amplifier Technology
- Balanced
Line Inputs
- Single-Ended
Line Inputs
- Input
Level Control
- Line
Output for Daisy Chaining
- 12V
Trigger In/Out
- Auto
Turn-on with Selectable Threshold
- IR
In/Out
- Ground
Lug
- Detachable
AC Power Cord
2 Rated Output Power into 8 Ohms
2 Rated Output Power into 4 Ohms
Dynamic Power 260/490/570W @ 8/4/2 Ohms
1 Rated Output into 8 Ohms Bridge Mode
Dynamic Power 1000/1100W @ 8/4 Ohms
Eigentakt™ Amplifier Technology
Line Inputs
Line Inputs
Level Control
Output for Daisy Chaining
Trigger In/Out
Turn-on with Selectable Threshold
In/Out
Lug
AC Power Cord
ANALOG AUDIO INPUT/LINE OUT
- THD
(20 Hz – 20 kHz)
- <0.0005
% at 2V out
- Signal-to-Noise
Ratio
- >120
dB (IHF; 20 Hz – 20 kHz, ref. 2V out)
- Channel
separation
- >110
dB (1 kHz)
>100 dB (10 kHz)
- Input
impedance (R and C)
- Single-ended:
56 kohms + 280 pF
Balanced: 56 kohms +280 pF
- Maximum
input signal
- >7.0
Vrms (ref. 0.1 % THD)
- Output
impedance
- 390
ohms
- Frequency
response
- ±0.1
dB (20 Hz – 20 kHz)
- Maximum
voltage output -IHF load
- ≥>7.0
V (ref. 0.1 % THD)
ANALOG AUDIO INPUT/SPEAKER OUT
- Rated
output power into 8 Ohms and 4 ohms(Stereo mode) 80 W (ref. 20 Hz-20 kHz
at rated THD, both channels driven)
- 185 W
at 8 ohms
340 W at 4 ohms
- Rated
output power into 8 Ohms (Bridge mode, ref. 20 Hz-20 kHz at rated THD,
both channels driven)
- 620 W
at 8 ohms
- THD
(20 Hz – 20 kHz)
- <0.005
% (1 W to 185 W, 8 ohms and 4 ohms)
- Signal-to-Noise
Ratio
- >98
dB (A-weighted, 500 mV input, ref. 1 W out in 8 ohms)
>120 dB (A-weighted, ref. 185 W out in 8 ohms)
- Clipping
power (Stereo mode, at 1 kHz 0.1 % THD)
- >200
W
- Clipping
power (Bridge mode, at 1 kHz 0.1 % THD)
- >690
W
- IHF
dynamic power (Stereo mode, at 1 kHz 1 % THD)
- 8
ohms: 260 W
4 ohms: 490 W
2 ohms: 570 W
- IHF
dynamic power (Bridge mode, at 1 kHz 1 % THD)
- 8 ohms:
1000 W
4 ohms: 1100 W
- Peak
output current
- >25
A (in 1 ohm, 1 ms)
- Damping
factor
- >800
(ref. 8 ohms 20 Hz – 6.5 kHz)
- Frequency
response
- ±0.2
dB (20 Hz – 20 kHz)
-3 dB at 60 kHz
- Channel
separation
- >100
dB (1 kHz)
>80 dB (10 kHz)
- Stereo
Mode input sensitivity (for 185 W in 8 ohms)
- Fixed
Gain mode: 1.43 V
- Stereo
Mode Gain
- Fixed
Gain mode: 28.6 dB
- Line
In – Balanced and Single-ended
- Variable
Gain mode: 8.5 dB – 28.5 dB
- Bridge
Mode Sensitivity
- Fixed
Gain mode: 3.78 V for 620 W in 8 ohms
- Line
In – Balanced and Single-ended
- Variable
Gain mode at maximum: 1.41 V for 620 W in 8 ohms
- Bridge
Mode Gain
- Fixed
Gain mode: 25.4 dB
- Line
In – Balanced and Single-ended
- Variable
Gain mode: 14.5 dB – 34.5 dB
- Standby
power
- <0.5
W
DIMENSION AND WEIGHT
- Gross
dimensions (W x H x D)
- 435 x
120 x 390 mm (17 1/8 x 4 3/4 x 15 3/8 inches)
- Net
weight
- 11.2
kg (24.7 lbs)
- Shipping
weight
- 13.6 kg (30 lbs)
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