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.

Line In, Speaker Out (Analog bypass on)
Continuous output power into 8 ohms and 4 ohms
>180W (ref. 20 Hz-20 kHz at rated THD, both channels driven)
THD (20 Hz – 20 kHz)
<0.02% (250 mW to 180 W, 8 ohms and 4 ohms)
Signal/Noise Ratio
>95 dB (A-weighted, 500 mV input, ref. 1 W out in 8 ohms)
Clipping power
210W (at 1 kHz 0.1 % THD)
IHF dynamic power
8 ohms: 217 W

4 ohms: 400 W

2 ohms: 506.4 W

Peak output current
>26 A (in 1 ohm, 1 ms)
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 180 W in 8 ohms)
Line In: 201 mV

Digital In: 10.25% FS
Line Input, Pre Out (Analog bypass on)
THD (20Hz-20kHz)
<0.002 % at 2 V out
Signal/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 Impedance (R and C)
46 kohms/100 pF
Input Sensitivity
1.08mV (ref. 500 mV out, Volume maximum)
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/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
General Specifications
Supports bit rate/sample rate
up to 24 bit/192 kHz
Frequency band
2.402G- 2.480G
Maximum transmit power (dBm)
7 dBm ± 2 dBm
Weight & Dimensions
Gross dimensions (W x H x D) **
435 x 120 x 390mm (17 1/8 x 4 3/4 x 15 3/8)”
Net Weight
11.2kg (24.7lb)
Shipping Weight
13.6kg (30lb)



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