NAD C389: An Integrated Stereo Amplifier with Innovative Modular Design
The NAD C389 utilizes next-generation digital amplification. This proprietary NAD technology offers high efficiency, a balanced signal-to-noise ratio, and low distortion across the entire audio spectrum, regardless of speaker impedance.
Its anthracite gray aluminum chassis with rounded corners gives it a look that is both modern and classic. The minimalist front panel houses the essential controls: a volume knob, a directional control system, and a screen for accessing various settings.
High-Performance Hybrid Amplification
For the output stage, the NAD C389 relies on a customized version of the proven HybridDigital UcD amplifier design. Several UcD amplifier modules are used in a bridged symmetrical configuration, paired with a cutting-edge switching power supply capable of providing significant reserves of instantaneous current. This design allows the C389 to deliver an impressive continuous power of 130W per channel, with extremely low distortion and noise across the entire bandwidth, regardless of speaker impedance. Instantaneous power can even reach 350W per channel to effortlessly reproduce the most demanding transients.
A Reference Digital-to-Analog Converter
The digital section of the C389 is built around the same 32-bit/384 kHz ESS Sabre DAC used in the high-end NAD M33 streaming amplifier. Known for its wide dynamic range, low jitter, and minimal distortion, this converter enables the C389 to deliver astonishing clarity and a holographic sound image, regardless of the digital source.
Comprehensive and Versatile Connectivity
The NAD C389 features all the necessary inputs to accommodate your various audio sources. It includes two optical and coaxial digital inputs compatible with 24-bit/192 kHz, as well as two analog line inputs on RCA. These benefit from ultra-low noise buffer amplifiers to preserve signal purity.
Vinyl enthusiasts will appreciate the precise integrated MM phono stage, with its RIAA equalization, high overload margins, and extremely low noise level. An innovative circuit eliminates subsonic noise without affecting bass response.
The versatility of the C389 is also demonstrated by the presence of an HDMI eARC input to connect a TV and enjoy home theater sound on your hi-fi speakers. The two subwoofer outputs allow for an optimized 2.1 or 2.2 system for music and movies. A preamp output and a dedicated low-impedance headphone amplifier complete this setup.
A Future-Ready Amplifier
True to NAD’s modular philosophy, the C389 is equipped with the latest generation MDC2 (Modular Design Construction) technology. Two expansion slots are available to add features like BluOS multi-room audio streaming or Dirac Live automatic room correction. This allows the amplifier to evolve with technological advancements.
The C389 also includes bidirectional Bluetooth. It is compatible with the aptX HD codec to receive 24-bit wireless audio streams from a smartphone or tablet. The Bluetooth connection also allows sound transmission to headphones or wireless speakers.
What are the main differences between the NAD C389 and the C399 model?
The C389 is the younger sibling of the C399. It retains most of the features and functionalities in a more compact and slim chassis. The main difference lies in the output power, with the C399 delivering 180W per channel compared to 130W for the C389. However, the latter is still capable of efficiently powering the vast majority of hi-fi speakers.
Is the NAD C389 compatible with low-impedance or moderately efficient speakers?
Absolutely, thanks to its hybrid amplification design and oversized power supply, the C389 can easily drive complex loads. Its 130W power under 4 or 8 ohms, coupled with its ability to deliver high current peaks, allows it to maintain control over speakers with low sensitivity or significant impedance variations.
Can I use the NAD C389 to listen to my vinyl records?
Yes, the C389 includes a high-quality phono stage dedicated to moving magnet (MM) cartridges. This stage is characterized by very low noise, precise RIAA equalization, and high overload margins. A specific circuit even eliminates subsonic noise without affecting the bass response. Simply connect your turntable equipped with an MM cartridge and enjoy vinyl playback at the highest level.
What are the advantages of the Bridge Mode offered by the C389?
The Bridge Mode allows you to combine the two amplification channels to drive a single speaker, doubling the available power and current. The C389 can thus deliver up to 260W in Bridge Mode under 8 ohms. This is ideal for powering an active subwoofer or very demanding speakers that require a lot of watts. The Bridge Mode is easily configured via the settings menu.
Is it possible to control the C389 from your armchair?
The C389 comes with an infrared remote control that provides access to all essential functions: power on, source selection, volume adjustment, Bluetooth control, etc. For even more flexibility, the NAD Remote mobile app allows you to control the amplifier via Bluetooth from your smartphone. All settings are accessible, and the bidirectional Bluetooth connection even allows for wireless music playback.
