Stereo Receiver | NAD 7400 instruction

7400 Stereo Receiver

Date of manufacture : ? - Nov 89

Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date

The 7400 Receiver (composed of circuitry from the 2400 Power Amp and 1700 Preamplifier/Tuner) was designed according to the same principles as the 7l00, but it is approximately twice as powerful and has additional refinements, including semi-parametric tone controls and convenient analogue style knob tuning.

While the 7400 is conservatively rated at 100 watts per channel continuous power for test tones, its Power Envelope circuit produces upwards of 370 watts per channel of long-term dynamic power for music, with a peak current of 40 amperes for precise control of voice-coil motion with speaker impedances as low as 2 ohms. For still more power, a rear-panel bridging switch converts the output stage into a mono amplifier rated at 200 watts continuous power and 800 watts of tone-burst power for music, The companion 2400 Power Amplifier may be added for stereo.

Semi-parametric tone controls combine the the simplicity of ordinary bass and treble controls with the flexibility of a two-band parametric equaliser. Bass EQ) strengthens the deep bass while infrasonic filtering prevents muddy intermodulation distortion. Ultra-quiet line-level circuits, including a feedback- operated volume control that reduces noise as its gain is lowered, provide a signal/noise ratio exceeding that of any source, analogue or digital. Dual tape circuits (with independent two-way dubbing and monitoring and external preamp-out/main-in connections make it easy to upgrade your system at any time with an equaliser, surround-sound processor, or electronic crossover.

The sensitive and quiet tuner section of the 7400 is controlled by a rotary tuning knob and 14 presets, combining the natural, intuitive feel of analogue tuning with the precision of digital frequency-synthesis. Automatic station-seek tuning is included on the remote control. FM NR, selectable I.F. bandwidth, and numerous internal refinements provide surprising station-pulling power and satisfying sound under widely varying reception conditions.

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.