The “best
buy” 2100 Power Amp is remarkable even by NAD’s standards.
While its
rated power for continuous test tones is 50 watts channel, it’s effective power
output for music is an impressive 200 to 330 watts per channel (depending on
speaker impedance). Thanks to NAD’s unique Power Envelope circuitry, this high
level of tone-burst power is available not just for brief transients but for
the full duration of complex chords and musical climaxes.
Yet
the 2100 has the same modest size and low price as other “50 watt” amplifiers
with 40,000 μ F of power-supply
capacitance, the 2100 delivers peak currents as high as 30 amperes to cope with
the most complex and reactive loudspeaker impedances. In addition to power and
control, the 2100 has delicacy; with a signal-to-noise ratio of 117 dB, it
faithfully reproduces every subtle strand of low-level musical detail and
back-ground ambience. With its high-speed output stage and ultra-low
distortion, the clarity of its sound must he heard to he appreciated.
You can use
either wide-hand inputs or filtered inputs 112Hz to 80kHz that strip off
interference, prevent intermodulation distortion, and protect your speakers
from unwanted subsonic signals The filtered inputs also have input- level
controls that match your preamp’s output, balance levels in biamped or surround
systems and allow you to bypass your preamp and connect a line level source
directly to the power amp. Heavy-duty binding-post terminals provide secure
low-resistance connections for all types of speaker wire.
If you need
more power, a rear-panel switch combines the amplifier’s two channels to form a
mono amp rated at 100 watts continuous and 500 watts tone-burst output. The
efficiency and compact size of the 2100 also make it a perfect choice for
hi-amplifying speakers. (Suggestion for a high-definition audiophile system:
instead of buying exotic and expensive speaker cables to stretch across the
room, install a bridged or bi-amped 2100 directly behind each speaker,
connected with ultra-short wires.
Specifications
Power Amp
Section
Continuous
Output Power (into 8 Ω) : 60 W (17 dBW)
Rated
Distortion (THD 20Hz - 20kHz): 0,03%
Clipping
Power (maximum continuous power per channel):
70 W
IHF
Dynamic Headroom (at 8 Ω): +6dB
IHF Dynamic
Power (maximum short term power per channel)
8 Ω : 200 W (23 dBW)
4 Ω : 250 W (24 dBW)
2 Ω : 330 W (25 dBW)
Damping
Factor (ref. 8 Ω, 50 Hz):
better than 100
Input
Impedance: 10 kΩ / 600 pF
Input
Sensitivity (for rated power into 8 Ω): 0.85V
Frequency
Response: 3 Hz - 100 kHz +0, -3 dB
Signal-to-Noise
Ratio
ref. 1W
: 100 dB
ref. rated
power : 117 dB
Total
Harmonic Distortion (20Hz - 20kHz): less
than 0,03%
Bridged Mode
Continuous
Output Power (into 8 Ω) : 100 W (20 dBW)
IHF
Dynamic Headroom (at 8 Ω) : +7 dB
IHF Dynamic
Power (maximum short term power per channel)
8 Ω : 500 W (27 dBW)
4 Ω : 660 W (28 dBW)
General
Section
Power
Supply/Consumption: 120 ~ 240 V, 50/60Hz / 330 VA
Dimensions
(W x H x D): 435 x 106 x 385 mm
Weight
Net : 9,5 kg
Shipping
: 10,9 kg