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NAD C 389 BluOS-D

Power and Performance

For over 50 years, the NAD brand has been synonymous with performance and value, and the C 389 HybridDigital DAC Amplifier continues that tradition. Its output stage is based on a customized version of NAD’s efficient HybridDigital UcD design, with multiple UcD amplifier modules in balanced bridged configuration and an innovative switch-mode power supply that provides ample reserves of current on demand. The C 389 can deliver a staggering 130W per channel continuously, with virtually unmeasurable distortion and noise through the audioband, and up to 350W per channel of instantaneous power, for effortless reproduction of musical transients.

The digital section features the same 32-bit/384kHz ESS Technology Sabre DAC chip used in NAD’s award-winning Masters M33 amplifier. Renowned for its exceptionally wide dynamic range, ultra-low noise and distortion, and near-zero levels of clock jitter, the ESS Sabre 9028 DAC enables the C 389 to deliver astonishing clarity and near-holographic imaging on all sources.

Future Friendly

In 2006, NAD introduced Modular Design Construction technology, which lets users add new features by inserting an expansion module into an MDC-capable component. In 2021, NAD introduced MDC2, a next-generation future-proofing platform that enables two-way communications between the expansion module and host component.

The C 389 has two MDC2 expansion slots, so that it can stay current with new developments in A/V technology. NAD’s first MDC2 module is the MDC2 BluOS-D, which features BluOS high-res multi-room streaming and Dirac Live room correction.

The MDC2 BluOS-D connects to your home network via Wi-Fi or wired Ethernet. Using the BluOS Controller app on a smart device or personal computer, you can play music from your favourite streaming services and personal music library through the C 389. BluOS has integrated support for more than 20 services, including several that offer lossless and high-res audio, such as Amazon Music HD, Deezer, Idagio, Qobuz and Tidal. Like all BluOS-enabled components, the MDC2 BluOS-D has MQA decoding and rendering capability, for high-res streaming from Tidal. It also supports Apple AirPlay 2, Spotify Connect and Tidal Connect, as well as Amazon Alexa voice control. With the MDC2 BluOS-D installed, the C 389 can be part of a whole-home music system with as many as 64 zones.

By counteracting common acoustic problems like standing waves and room reflections, Dirac Live room correction transforms your listening experience. Connect the supplied microphone to the MDC BluOS-D’s USB port, and then run the free Dirac Live app on a smart device or personal computer. Dirac Live will play test tones through your speakers, analyze the results, then transfer compensation filters to the MDC BluOS-D. You’ll enjoy deeper, more textured bass; more precise imaging; greater midrange clarity; and more accurate tonal balance. Thanks to MDC2’s two-way architecture, the MDC2 BluOS-D delivers these benefits on all sources connected to the C 389.

Everything’s Connected

The C 389 can accommodate all your analogue and digital source components. Connectivity options include two optical and two coaxial digital inputs and two sets of RCA line-level analogue inputs. The analogue inputs have ultra-low-noise buffer amplifiers for greater sonic purity.

For vinyl enthusiasts, the C 389 features a precise MM phono section with accurate RIAA equalization, high overload margins, and extremely low noise. The phono section incorporates an innovative circuit that suppresses the infrasonic noise that is always present during vinyl playback, without affecting bass performance.

For movies and television, the C 389 has an HDMI eARC input so that you can play TV audio from through your high-fidelity speakers while controlling volume with the TV’s remote. Dual subwoofer outputs enable the C 389 to serve as the hub of a 2.1- or 2.2-channel system for music and movies. With the MDC2 BluOS-D installed, you can set crossover frequency with the BluOS app, for a seamless blend between the subwoofers and main speakers.

For private listening, the C 389 has a dedicated headphone amplifier with low output impedance and very high voltage output capability, making it a good match even for demanding studio headphones. The C 389 also features Bluetooth aptX-HD playback.

Truly Timeless

Building on five decades of innovation in amplifier design, NAD’s C 389 HybridDigital DAC amplifier offers audiophile-class performance, flexible connectivity, class-leading upgradability, and long-term value. Thanks to its precise volume control, ultra-low-noise circuitry, and cutting-edge amplifier design, the C 389 can deliver wonderfully refined sound at lifelike listening levels through virtually any loudspeaker. Thanks to NAD’s next-generation MDC2 future-proofing technology, you can update your C 389 with exciting features like multi-room music streaming and automatic room correction. With the C 389 HybridDigital DAC-Amplifier, the NAD legend continues.

Preliminary Features & Details

Customized HybridDigital UcD amplifier in fully balanced bridged configuration
Continuous Power: 130 Watts per channel into 8/4 ohms
Instantaneous Power: 210 W into 8 ohms, 300 W into 4 ohms, 350 Watts per channel
Vanishingly low harmonic and intermodulation distortion
Nearly unmeasurable noise through the entire audioband
Dual MDC2 ports for expanded functionality
Optional MDC2 BluOS-D module adds BluOS Hi-Res multi-room music streaming and Dirac Live room correction
Jitter-free 32-bit/384kHz ESS Sabre 9028 DAC
Ultra-low-noise MM phono stage with infrasonic filtering circuitry
Two optical, two coaxial digital inputs
HDMI-eARC input
Two pairs of line-level analogue inputs with ultra-low-noise buffer amplifiers
Two sets of speaker outputs
Bluetooth aptX-HD playback
Dual subwoofer outputs
Dedicated headphone amplifier
CI-Friendly – IR remote, 12V Trigger in/out, IR in/out, RS-232 Serial port
Seamless integrations with smarthome control systems such as Control4, Crestron, RTI, URC, Lutron, and Elan

LINE INPUT, PRE-OUT (ANALOG BYPASS ON)
THD (20Hz – 20kHz)	<0.002 % at 2 V out
Signal-to-Noise Ratio	>106dB (IHF; A-weighted, ref. 500 mV out, unity gain)
Channel separation	>100dB (1 kHz); >90 dB (10 kHz)
Input Impedance (R and C)	56 kohms + 100 pF
Maximum input signal	>4.6 Vrms (ref. 0.1 % THD)
Output impedance	Source Z + 320 ohms
Input sensitivity	65mV (ref. 500 mV out, Volume maximum)
Frequency response	±0.3 dB (20 Hz – 20 kHz)
Maximum voltage output -IHF load	>>5 V (ref. 0.1 % THD)
PHONO INPUT, PRE-OUT (ANALOG BYPASS ON)
THD (20Hz – 20kHz)	<0.01% at 2 V out
Signal-to-Noise Ratio	>84dB (200 ohms source; A-weighted, ref. 500 mV out)
Input sensitivity	46 kohms/100 pF
Frequency response	±0.3 dB (20 Hz – 20 kHz)
Maximum input signal at 1kHz	>80 mVrms (ref. 0.1 % THD)
LINE INPUT, HEADPHONE OUT (ANALOG BYPASS ON)
THD (20Hz – 20kHz)	<0.005% at 1V out
Signal-to-Noise Ratio	>107 dB (32 ohms loads; A-WTD, ref. 1V out, unity gain
Frequency response	±0.3 dB (20 Hz – 20 kHz)
Channel separation	>62 dB at 1kHz
Output impedance	2.2 Ohms
LINE IN, SPEAKER OUT (ANALOG BYPASS ON)
Continuous output power into 8 ohms and 4 ohms	2 x 130W
THD (20 Hz – 20 kHz)	<0.02% (250 mW to 130 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio	>95 dB (A-weighted, 500 mV input, ref. 1 W out in 8 ohms)
Clipping power	150W
IHF dynamic power	210W into 8 ohms 300W into 4 ohms 350W into 2 ohms
Peak output current	>26A (in 1 ohm, 1ms)
Damping factor	>150 (ref. 8 ohms, 20Hz to 6.5kHz)
Frequency response	>±0.3 dB (20 Hz – 20 kHz)
Channel separation	>90dB (1 kHz) >75dB (10 kHz)
Input sensitivity (for 130 W in 8 ohms)	Line In: 201 mV, Digital In: 10.25% FS
GENERAL SPECIFICATIONS
Supports bit rate/sample rate	up to 32 bit/384 kHz
Frequency band	2.402GHz- 2.480GHz
Maximum transmit power (dBm)	7 dBm ± 2 dBm
DIMENSIONS AND WEIGHT
Gross dimensions (W x H x D)	435 x 100 x 390mm (17.1 x 3.9 x 15.4“)
Net Weight	8.7kg (19.1lb)
Shipping weight	~11kg (24.2lb)

MDC2 BluOS D

BluOS multi-room music streaming

NAD Modular Design Construction2 BluOS-Dirac Module

Compatibility

C 399 Hybrid Digital DAC Amplifier, C 389 Hybrid Digital DAC Amplifier, C 3050 Stereophonic Amplifier

NAD Electronics is proud to announce the next generation of our innovative Modular Design Construction future-proofing technology, which allows owners of NAD components add exciting new features simply by performing a software upgrade and slipping a hardware module into an MDC slot on the back panel. Modular Design Construction2 features an all-new design that enables bidirectional communications between the module and host component, allowing a dramatically wider range of upgrade options.

NAD’s first MDC2-Enabled component is the C 399 HybridDigital DAC Amplifier. The module, MDC2 BluOS-D, adds Dirac Live room correction and BluOS multi-room music streaming to all compatible products listed above.

Dirac Live Room Correction

The weakest link in most sound systems is the listening environment. Room modes can cause boomy, uneven bass response; and reflections of sounds from room surfaces can smear transients and disrupt stereo imaging. Dirac Live analyzes room acoustics, and then uploads compensation filters to the MDC2 BluOS-D module. The MDC2 BluOS-D module corrects peaks and dips at frequencies up to 500Hz, which is the area where room modes are most problematic; a license for the full-bandwidth version of Dirac Live is available as an option. Dirac Live also optimizes impulse response by analyzing how sounds are reflected off room surfaces.

With Dirac Live enabled, listeners will enjoy vastly improved bass clarity, imaging, and timbral accuracy on all sources. The MDC2 BluOS-D module can store up to five Dirac profiles for different listening positions or room conditions—for example whether the drapes are open or closed.

The MDC2 BluOS-D module is NAD’s first module to enable Dirac Live room correction on a two-channel component—a testament to the versatility of the MDC2 platform. A calibrated microphone is included for performing room measurements.

BluOS Music Streaming

The MDC2 BluOS-D module features BluOS, a multi-room high-resolution streaming platform acclaimed for its versatility and ease of use. With the MDC2 BluOS-D module installed, owners of the C 399 and future MDC2-enabled components can access hundreds of Internet radio stations and over 20 streaming services, including several that deliver lossless and high-resolution audio. Thanks to MDC2’s bidirectional architecture, users can share audio from any source with up to 63 other BluOS-enabled components on the same network.

Playback can be controlled from the intuitive BluOS Controller app, available for iOS, macOS, Android, and Windows; by Alexa or Google voice commands; and from smart home control systems such as Crestron, Control4, Lutron, and RTI. Like all BluOS devices, the MDC2 BluOS-D module supports high-resolution audio to 24-bit/192kHz, and can perform MQA hardware decoding and rendering.

Future-Friendly

The MDC2 BluOS-D module incorporates the latest Wi-Fi and Ethernet protocols, as well as two-way Qualcomm aptX HD Bluetooth. It supports Apple AirPlay 2, Siri voice control, Spotify Connect, and Tidal Connect. Listeners can also play music from their personal libraries, stored on an external drive connected to the MDC2 BluOS-D module’s USB port.

The MDC2 BluOS-D module provides a vast range of options for playing local, networked, and cloud-based content throughout your home. And with its bidirectional communications architecture, the MDC2 platform is ready for innovations that have yet to be conceived.

FEATURES & DETAILS

Dirac Live Room Correction*
Calibrated microphone included for Dirac setup
Wi-Fi and Ethernet networking
BluOS music streaming to up to 63 zones
Support for hundreds of Internet radio stations and over 20 streaming services
High-res audio to 24-bit/192kHz
MQA decoding and rendering
Apple AirPlay 2 and Siri voice control
Amazon Alexa and Google Assistant voice control
Spotify Connect and Tidal Connect
Two-way (send/receive) Qualcomm aptX HD Bluetooth
^{The MDC2 BluOS-D modile will include a license for Dirac Live with the option for advanced users to upgrade to a Dirac Live Full Frequency version.}

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