| NAD 2100 bridgeable stereo power amplifier - charcoal grey :|
NAD are a leading producer of affordable amplifiers that produce the full measure of dynamic headroom required by digital recordings
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 bi-amped 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
FIVE reasons why NAD amplifiers SOUND BETTER :
1] Ultra-Low noise - the musical realism of an amplifier depends as much on its transparent reproduction of subtle details as on its solid handling of big climaxes. In NAD amplifiers all circuits operate at low impedances so that no low-level hiss or hum can intrude on the quiet background of the music. And there are no noisy heat-dissipating fans - NAD amplifiers are as silent acoustically as they are electronically.
2] Controlled Bandwidth - With today's technology it is easy to produce ultra-wide bandwidth. But this may cause the amp to waste power amplifying non-musical signals that you can't or don't want to hear, including interference from nearby digital circuits and CB radios. Worse, this interference causes distortion that you can hear. Therefore all NAD equipment contains filters that block spurious interference, amplifying only the music.
3] Absolute immunity to Transient Intermodulation Distortion - NAD amplifiers have ultra-wide internal bandwidth, so they cannot be driven into transient intermodulation or slew-induced distortion by any audio signal or combination of signals.
4] High Current for Low Impedance - Many loudspeakers have a complex impedance curve that is lower than 8 ohms at some frequencies. The lower and more complex the impedance, the more output current the amplifier must deliver. A special rear panel switch optimizes NAD amplifiers for 8 ohms or for low impedances [ 2 - 6 ohms ]
5] Adaptive Soft Clipping - NAD premiered the use of Soft Clipping in solid state amplifiers, gently rounding off waveform corners when the amplifier is overdriven. This eliminates any harsh power-supply buzz and high-order distortion.
Specifications : Continuous power [ min RMS per channel 20Hz - 20kHz, less than rated distortion into 8 ohms ]:
-:®:- 60W RMS [17dBW]
-:®:- Rated distortion [ THD, 20Hz - 20kHz ] 0.03%
-:®:- Clipping Power : 70W
-:®:- Dynamic headroom +6dB
-:®:- IHF Dynamic Power x 2 at 8 ohms: 200W, 4 ohms 250W, 2ohms 330W
-:®:- Damping Factor [8 ohms, 50Hz]: > 100
-:®:- Slew Rate > 35V / µsec
-:®:- Input impedance : R = 10kohms, C = 600pF
-:®:- Input sensitivity at rated power : 85mV
-:®:- Signal to Noise ratio [ 1W / 100W, A-weighted ]: 100dB / 115dB
Bridged Monophonic MODE : Continuous power [ min RMS per channel 20Hz - 20kHz less than rated distortion ]:
-:®:- 8 ohms 100W RMS [20dBW]
-:®:- Dynamic headroom mono : +7dB IHF Dynamic mono power : 500W at 8ohms, 660W at 4ohms
Dimensions : -:®:- Dimensions [ W x H x D ] : 435 x 106 x 385mm
-:®:- Weight : 13kg packed weight : 9.5kg, - packed ~ 11kg
SOLD April 2012 on trademe to Auckland