NAD C 399 HybridDigital DAC Amplifier is the flagship model of NAD’s Classic series, built to deliver Masters-level performance and future-ready design in a powerful, integrated form. Featuring the advanced HybridDigital nCore amplifier and a reference-grade ESS Sabre 9028 DAC, the C 399 delivers a stunningly detailed and transparent soundstage. Its two MDC2 expansion ports support BluOS multi-room streaming and Dirac Live room correction, making it one of the most versatile and enduring amplifiers in its class.
Key Features
- HybridDigital nCore amplifier delivering 180W per channel (continuous) and 250W (instantaneous)
- ESS Sabre 9028 32-bit/384kHz DAC for ultra-high-resolution playback
- Dual MDC2 ports for expanding features like BluOS streaming and Dirac Live room correction
- Two optical, two coaxial digital inputs and HDMI-eARC for high-quality audio from TV
- Ultra-low-noise MM phono stage with infrasonic filter for vinyl playback
- Bluetooth aptX HD for high-quality wireless playback
- Dedicated headphone amplifier with high output voltage and low impedance
- Dual subwoofer outputs and pre-outs for flexible system expansion
- CI integration: IR, 12V trigger, RS-232, and certification for major control systems
Technical Specifications
| Amplification (Line In, Speaker Out) |
| Continuous Output Power (8/4 Ohms) |
2 x 180W |
| THD (20Hz–20kHz) |
<0.02% |
| Signal-to-Noise Ratio |
>95 dB (A-weighted) |
| Clipping Power |
210W |
| IHF Dynamic Power |
8Ω: 217W, 4Ω: 400W, 2Ω: 506.4W |
| Peak Output Current |
>26A |
| Damping Factor |
>150 |
| Frequency Response |
±0.3 dB (20Hz–20kHz) |
| Channel Separation |
>90 dB (1kHz), >75 dB (10kHz) |
| Input Sensitivity |
Line: 201 mV, Digital: 10.25% FS |
| Preamplifier (Line In, Pre-Out) |
| THD |
<0.002% at 2V out |
| Signal-to-Noise Ratio |
>106 dB (A-weighted) |
| Channel Separation |
>100 dB (1kHz), >90 dB (10kHz) |
| Input Impedance |
56 kohms + 100 pF |
| Maximum Input Signal |
>4.6 Vrms |
| Input Sensitivity |
65 mV |
| Frequency Response |
±0.3 dB (20Hz–20kHz) |
| Maximum Voltage Output |
>>5V |
| Phono Input (MM) |
| THD |
<0.01% at 2V out |
| Signal-to-Noise Ratio |
>84 dB (A-weighted) |
| Input Impedance |
46 kohms / 100 pF |
| Input Sensitivity |
1.08 mV |
| Frequency Response |
±0.3 dB (20Hz–20kHz) |
| Maximum Input Signal |
>80 mVrms (1kHz) |
| Headphone Output |
| THD |
<0.005% at 1V out |
| Signal-to-Noise Ratio |
>107 dB (32Ω load) |
| Frequency Response |
±0.3 dB (20Hz–20kHz) |
| Channel Separation |
>62 dB (1kHz) |
| Output Impedance |
2.2 Ohms |
| General |
| Supported Sample Rate |
Up to 24-bit / 192 kHz |
| Bluetooth Frequency Band |
2.402GHz – 2.480GHz |
| Max Bluetooth Transmit Power |
7 dBm ± 2 dBm |
| Dimensions |
| Net Dimensions (W x H x D) |
435 x 120 x 390 mm |
| Net Weight |
11.2 kg |
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