NAD 2140

Classic Dual Mono Stereo Power Amplifier


In nice condition!  From the early 1980's - a classic. Original box, packing, (we will pack carefully) and manual are not included.

Front panel discoloration is camera lighting glare.


SOFT CLIPPING (TM): When an amplifier is overdriven beyond its specified power output it normally produces "hard clipping" of the signal with harsh distortion and power-supply buzz as the output transistors saturate. The NAD Soft Ciipping circuit gently limits the output waveform and minimizes audible distortion when the amplifier is overdriven.

BRIDGING MODE SWITCH. (TM) This switch "bridges" the NAD 2140's two power amolifier channels to form a monophonic amplifier with more than double the output power.

SPEAKER LEAD COMPENSATOR (TM) (SLC). The Speaker Lead Compensator (SLC) cancels the effects of the wire resistance, eliminating the distortion and restoring the performance which would be obtained if the wire had no resistance. The SLC is calibrated for a specific amount of wire resistance.

LAB and NORMAL INPUT JACKS. Two pairs of input jacks are provided on the amplifier. The LAB inputs have wideband frequency response extending uniformly from low infrasonic to high ultrasonic frequencies, and may be used for laboratory tests and special applications benefiting from such a wide frequency range. The NORMAL inputs are equipped with infrasonic and ultrasonic filters which limit the amplifier's "flat" response to the audio frequency range. These filters reject noise and interference occurring outside the audible frequency range, in order to prevent intermodulation distortion and to preserve the amplifier's power for music. For conventional operation, connect signal cables from your preamplifier's main outputs to the NORMAL lN jacks. The upper jack is for the left channel and the lower jack for the right. lf your preamplifier contains its own infrasonic and ultra- sonic filtering to eliminate non-audio signals, then you may prefer to connect the cables to the LAB inputs.

Power output: 50 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 30kHz

Total harmonic distortion: 0.03%

Damping factor: 150

Dimensions: 420 x 96 x 280mm

Weight: 8.3kg

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