PRE-AMP SECTION

 

 

Phono input

 

 

Input impedance (R and C)

MM

47kΩ / 120pF

 

MC

47kΩ / 120pF

Input sensitivity, 1kHz

MM

0.28mV ref. 1W

 

MC

0.02mV ref. 1W

Signal/Noise ratio (A-weighted with cartridge connected)

MM

76dB ref. 5mV

 

MC

76dB ref. 5mV

THD (20Hz - 20kHz)

 

<0.04%

RIAA response accuracy (20Hz - 20kHz)

 

±0.5dB

 

 

 

Line level inputs

 

 

Input impedance (R and C)

 

50kΩ / 250pF

Input sensitivity (ref. 1W)

 

15mV

Maximum input signal

 

>10V

Signal/Noise ratio (A-weighted ref 1W)

 

96dB

Frequency response (20Hz - 20kHz)

 

±0.3dB

 

 

 

Line level outputs

 

 

Output impedance

Pre-amp

600Ω

 

Tape

Source Z + 1kΩ

Maximum output level

 

>10V

 

 

 

Tone controls

 

 

Treble

 

±12dB at 3, 6 or 12kHz

Bass

 

±12dB at 50, 120 or 250Hz

Bass EQ

 

+3dB at 60Hz

 

 

+6dB at 36Hz

Infrasonic filter (Switchable)

 

-3dB at 12Hz, 12dB / octave

 

 

 

POWER AMP SECTION

 

 

Continuous output power into 8Ω *

 

100W (20dBW)

Rated distortion (THD 20Hz - 20kHz)

 

0.03%

Clipping power (maximum continuous power per channel)

 

130W

IHF Dynamic headroom at 8Ω

 

+5.7dB

IHF dynamic power (maximum short term power per channel)

370W (25.7dBW)

 

400W (26dBW)

 

440W (26.4dBW)

Damping factor (ref. 8Ω , 50Hz)

 

>100

Input impedance

 

20kΩ / 600pF

Input sensitivity (for rated power into 8Ω )

 

1V

Frequency response

 

3Hz - 100kHz +0, -3dB

Signal/noise ratio

ref. 1W

98dB

 

ref. rated power

118dB

THD (20Hz - 20kHz)

 

<0.03%

 

 

 

Bridged Mode

 

 

Continuous output power into 8Ω *

 

200W (23dBW)

IHF Dynamic headroom at 8Ω

 

+6dB

IHF dynamic power (maximum short term power per channel)

800W (29dBW)

 

880W (29.4dBW)

© NAD Electronics. All rights reserved. E & OE

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NAD 7400 brochure PRE-AMP Section, Power AMP Section

7400 specifications

The NAD 7400 is a remarkable addition to the world of high-fidelity audio equipment, known for its excellent sound quality and versatile features. This stereo integrated amplifier is designed to enhance the listening experience for audiophiles and casual listeners alike. Its construction embodies the ethos of NAD, a brand renowned for delivering high-performance audio products at competitive prices.

One of the standout features of the NAD 7400 is its PowerDrive technology. This innovation allows the amplifier to deliver high levels of current with minimal distortion, providing a clean and dynamic sound output. The PowerDrive technology adapts the amplifier's output to match the load presented by the speakers, ensuring optimal performance regardless of the type of speaker being used. It makes the NAD 7400 particularly effective in driving demanding speaker loads, which many other amplifiers struggle to handle.

The NAD 7400 also boasts a wide range of connectivity options, making it a highly versatile component in any audio setup. It includes multiple line-level inputs for connecting various audio sources such as CD players, turntables, and streaming devices. Additionally, it features a built-in phono stage, allowing users to connect vinyl turntables directly without needing an external preamp. The inclusion of a tape loop allows for easy integration of recording devices, broadening its usability.

Aesthetically, the NAD 7400 strikes a balance between modern design and classic appeal. The clean lines, minimalistic front panel, and high-quality controls reflect a focus on user-friendliness and elegance. The build quality is robust, ensuring durability while offering a premium feel. An interesting aspect is the quiet operation of the amplifier, which is achieved partly through its advanced circuit design that minimizes background noise and interference.

The performance characteristics of the NAD 7400 are notable, with a power output typically around 80 watts per channel, depending on the specific model. This power level is sufficient for driving a wide variety of speakers in different environments, whether in a small room or a larger setup. Moreover, NAD's Dynamic Power feature enhances the amplifier’s performance during transient peaks, further enriching the audio experience.

In summary, the NAD 7400 is a highly capable integrated amplifier that combines powerful performance, cutting-edge technology, and user-friendly features. Its PowerDrive technology, versatile connectivity options, aesthetic appeal, and clean output make it an excellent choice for anyone looking to elevate their audio setup to new heights. Whether for critical listening or casual enjoyment, the NAD 7400 stands out as a reliable and impressive option in the realm of high-fidelity sound systems.