Intelligent. Powerful. Efficient. Introducing the C 399, from NAD’s new Classic Amplifiers range.
As the new flagship of NAD’s Classic series of integrated amps, the C 399 HybridDigital DAC Amplifier takes NAD’s commitment to lasting value and sonic excellence to a whole new level.
The C 399 employs NAD’s Hypex HybridDigital nCore amplifier circuitry, which until now has been available only on Masters Series amplifiers. Its digital section is built around a 32-bit/384kHz ESS Sabre DAC, the same chip used in NAD’s acclaimed M10 and M33 Masters Series amplifiers.
The C 399 is the first amplifier to incorporate the latest generation of NAD’s Modular Design Construction (MDC) technology. MDC2 lets users add optional modules that provide functions such as BluOS multi-room music streaming and Dirac Live room correction.
• Hybrid Digital nCore Amplifier
• 180 Watts Continuous Power per channel into 8/4 ohms
• 250 Watts Instantaneous Power per channel
• Vanishingly low harmonic and intermodulation distortion
• Dual MDC2 Ports for future expansion with NAD modules
• MDC2 BluOS-D module pre-installed adds BluOS multi-room streaming and Dirac Live room correction
• Jitter-free 32-bit/384kHz ESS Sabre DAC for high-resolution audio
• Supports dozens of streaming services including Apple AirPlay 2, Spotify Connect, and Tidal Connect
• Ultra-low-noise MM phono stage with infrasonic filtering circuitry
• Two optical and two coaxial digital audio inputs
• HDMI-eARC input for connecting to a TV
• Two pairs of line-level analogue inputs with low-noise buffer amplifiers
• Speaker A/B outputs
• Two-way aptX-HD Bluetooth built-in
• Dual subwoofer outputs
• Dedicated headphone amplifier and 1/4" jack for private listening
• IR remote included
• 12V Trigger & IR in/out
• RS-232 Serial port for control integration with home automation systems
• Control4, Crestron, RTI, URC, AMX, Savant, Elan certified
Featuring technology trickled down from NAD’s Masters Series, the C 399’s HybridDigital nCore amplifier can deliver 180 Watts per channel continuous power, and 250 Watts per channel instantaneous power. Highly efficient and remarkably powerful, the HybridDigital nCore amplifier can produce musical transients effortlessly. The design is renowned for its wide bandwidth, flat frequency response, clean clipping behaviour with instant recovery, high current capability, and stability into demanding low-impedance speaker loads. Noise and distortion are vanishingly low under all operating conditions. The minute levels of harmonic distortion are dominated by sonically benign second and third harmonics. The Hypex nCore design enables the C 399 to produce neutral, distortion-free sound even at very high listening levels, with exquisite detail, superb portrayal of space, and thrilling dynamics.
Also trickled down from the Masters Series is the ESS Sabre 9028 high-resolution DAC, a design noted for near-zero levels of clock jitter, ultra-low noise and distortion, and wide dynamic range. This premium DAC enables the C 399 to reproduce all your digital sources with amazing musicality, stunning clarity, and precise soundstaging.
In 2007, NAD introduced Modular Design Construction, an innovative architecture for adding new functions to existing components. Many NAD products have rear-panel slots for MDC modules that perform HDMI switching, BluOS multi-room music streaming, Dolby Atmos surround processing, and other functions.
The C 399 is the first product to feature NAD’s new MDC2 architecture. By enabling two-way communications between the module and component, MDC2 opens up the future for new upgrades.
Equipped with Wi-Fi and Ethernet, the MDC2 BluOS-D module lets listeners play music from their favourite streaming services through the C 399, using the acclaimed BluOS Controller app for Android, iOS, macOS, and Windows. Like all BluOS-enabled products, the MDC2 BluOS-D has integrated support for dozens of streaming services; and supports Apple AirPlay 2, Spotify Connect, and Tidal Connect. Two-way communications also enable the MDC2 BluOS-D to stream music from sources connected to the C 399 to BluOS-enabled components in other rooms.
The Dirac Live function lets you measure your room’s acoustics using a supplied microphone and intuitive app, and then upload correction curves to the MDC2 BluOS-D. By compensating for acoustic anomalies in your listening environment, Dirac Live dramatically improves bass clarity, imaging, and timbral accuracy. Thanks to its two-way architecture, the MDC2 BluOS-D performs room correction for all sources connected to your C 399.
The C 399 can accommodate all your digital and analogue sources. Its MM phono stage delivers ultra-precise RIAA equalization, extremely low noise, and high overload margins. The phono preamp also features an innovative circuit that suppresses the infrasonic noise present on all LPs, without compromising bass response. There are two sets of line-level line inputs, with low-noise buffer amplifiers to prevent sonic degradation. The C 399 has two optical and two coaxial digital inputs, plus an HDMI-eARC port for playing audio from a connected TV, while controlling amplifier output with the TV’s remote control.
In addition to two sets of speaker outputs, the C 399 has preamp output jacks and dual subwoofer outputs. Two-way apt-X HD Bluetooth allows 24-bit streaming from mobile devices, and high-quality output to Bluetooth headphones. Also built-in is a dedicated headphone amplifier with low output impedance and high output voltage capability, enabling the C 399 to drive demanding high-impedance studio monitor headphones.
As with every NAD amplifier ever made, the C 399 gets the basics right: a precise volume control with accurate channel balance, low-noise circuits, and correct input and output impedances. But it goes far beyond the basics. With its HybridDigital nCore output stage and high-resolution ESS Sabre DAC, the C 399 can reproduce all your digital and analogue sources with a level of excitement and refinement that is unprecedented for a Classic-series integrated amplifier.
Thanks to NAD’s innovative MDC2 platform, the C 399 will keep pace with future developments. Essentially, MDC2 makes obsolescence obsolete. The C 399 can serve as the hub of a world-class music system today, and for years to come. With NAD’s C 399 HybridDigital DAC Amplifier, the legend continues.
In 1972, a new kind of audio company was born. NAD took form when a large group of audio-industry importers in Europe, all music lovers, set out to develop products that cut through the industry hype. The goal of NAD was to prove that excellent sound quality and excellent value could exist together. It was a formidable goal – some of the most reputable electronics brands of the time were unaffordable to most, while the affordable spectrum of the market was dominated by poor quality imports from global electronics giants. NAD’s founders remained undeterred and their original vision led to an inspiring story of how a group of specialty audio mavericks took on the Goliaths of the audio industry to carve out a unique place of their own.
NAD are dedicated to innovation, performance, value, and simplicity in all their products.
|Model Number||C 399 + BluOs2|
Line In, Speaker Out (Analog bypass on)
Continuous output power into 8 ohms and 4 ohms
THD (20 Hz – 20 kHz)
IHF dynamic power
Peak output current
Input sensitivity (for 180 W in 8 ohms)
Line Input, Pre Out (Analog bypass on)
Input Impedance (R and C)
Maximum Input Signal
Maximum voltage output – IHF load
Phono Input, Pre Out (Analog bypass on)
Signal to Noise Ratio
Input Impedance (R and C)
Maximum Input Signal at 1kHz
Line Input, Headphone Out (Analog bypass on)
Supports bit rate/sample rate
Maximum transmit power (dBm)
Weight & Dimensions
Gross dimensions (W x H x D)