NAD C 359S – Stereo Integrated Amplifier with BluOS 2x70W

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Description

The NAD C 359S brings the direct, tactile experience of a Classic Series amplifier into a thoroughly modern music system.

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Physical buttons and rotary controls provide the familiar, intuitive interaction that has long defined NAD integrated amplifiers, while Class AB amplification delivers clarity, power and musical detail. BluOS built-in adds high-resolution streaming and multi-room listening. HDMI eARC, Bluetooth aptX HD, phono and sophisticated subwoofer integration makes it easy to build a system around the music you enjoy. Familiar in character yet modern in capability, the C 359S puts music first.

NAD integrated amplifier on a wooden cabinet with a potted plant in the background.

KEY FEATURES

  • 2 × 70 watts of continuous power into 8 ohms and 2 × 120 watts into 4 ohms
  • Class AB amplification with a high-current, low-noise switch-mode power supply
  • BluOS built-in for high-resolution streaming and multi-room listening
  • HDMI eARC for direct connection to a compatible TV
  • Bluetooth aptX HD for high-quality wireless listening
  • Phono, analogue and optical inputs for flexible source connection
  • Sophisticated subwoofer integration with optional high-pass filtering
  • Dedicated headphone output for private listening
  • Physical buttons and rotary controls for direct, intuitive operation
  • IR remote control included

Familiar by Design
The C 359S stays true to the straightforward experience that has defined NAD integrated amplifiers for generations. Select a source, set the volume and settle into the music, with essential functions always close at hand. There’s no large display or menu-driven interface to navigate, yet behind that simplicity is a thoroughly modern amplifier with streaming, digital connectivity and flexible system integration. It’s a familiar approach to hi-fi, thoughtfully updated for how people listen today.

Amplifier front panel with knobs for Bass, Treble, Balance, and a large volume knob; green LED indicators above.

Engineered to Deliver
The C 359S takes a modern approach to proven Class AB amplification. Its high-current, low-noise switch-mode power supply draws on NAD’s Class D development expertise, providing clean, stable energy that responds effortlessly to musical demands. Delivering 2 × 70 watts continuously into 8 ohms and 2 × 120 watts into 4 ohms, the C 359S has the drive and composure to bring clarity, dynamics and control to a wide range of loudspeakers.

Wooden console with two black stereo components (amplifier and CD/receiver) and a potted plant on the left.

Discover More with BluOS
BluOS built-in brings high-resolution streaming and internet radio directly to the C 359S, making it easy to explore favourite albums, discover new music or tune into familiar stations. The intuitive BluOS Controller app keeps listening close at hand, while presets on the included IR remote provide quick access to preferred stations. Multi-room capability extends the experience to compatible BluOS players throughout the home, bringing more ways to enjoy music while preserving the simplicity that defines the C 359S.

Black stereo amplifier on a wooden desk with a smartphone playing music on top.

Made for Every Source
From vinyl and digital sources to wireless listening and TV sound, the C 359S makes it easy to bring more of what you enjoy into one system. HDMI eARC connects a compatible TV directly to the amplifier, while Bluetooth aptX HD offers convenient wireless listening. Phono, analogue and optical inputs welcome traditional source components, giving the C 359S the versatility to grow with the way you listen.

Row of streaming/compatibility badges: Apple AirPlay, TIDAL Connect, Spotify, BluOS Enabled, Gobuz Connect, Room Ready, MQA, 0.5W Standby.

A Better Approach to Bass
Adding a subwoofer can do more than extend bass response. With optional high-pass filtering, the C 359S can redirect low frequencies away from the main speakers, allowing them to focus on the range they handle best. This can improve clarity, imaging and available headroom while helping the speakers and subwoofer work more effectively together. It’s a thoughtful approach to 2.1 integration that can elevate performance across the entire system.

SPECIFICATIONS

THD (20 Hz – 20 kHz)
<0.005 % at 4V out

Signal-to-Noise Ratio
>90 dB (IHF; A-weighted, 500 mV out, unity gain)

Input impedance (R and C)
28 kohms + 360 pF

Maximum input signal
>3.7 Vrms (0.1 % THD)

Output impedance
440 ohms

Input sensitivity
160 mV (500 mV out, Volume maximum)

Frequency response
20 Hz – 20 kHz (±0.3 dB)

Maximum output voltage
>5 V (0.1 % THD)

THD (20 Hz – 20 kHz)
<0.005 % at 1V out

Signal-to-Noise Ratio
>110 dB (32 ohms load; A-weighted, 1V out, unity gain)

Frequency response
20 Hz – 20 kHz (±0.3 dB)

Channel separation
>60 dB at 1kHz

Output impedance
5 ohms

Rated output power into 8 ohms
70 W (20 Hz-80 kHz at rated THD, both channels driven)

Rated output power into 4 ohms
120 W (20 Hz-80 kHz at rated THD, both channels driven)

THD (20 Hz – 20 kHz)
<0.03 % (250 mW to 120 W, 4 ohms)

THD (20 Hz – 20 kHz)
<0.03 % (250 mW to 70 W, 8 ohms)

Signal-to-Noise Ratio
>90 dB (A-weighted, 500 mV input, 1 W out 8 ohms)

Clipping power
>130 W (1 kHz 0.3 % THD, 4 ohms)
>75 W (1 kHz 0.3 % THD, 8 ohms)

IHF dynamic power
8 ohms: 76 W
4 ohms: 144 W
2 ohms: 210 W

Peak output current
>20 A (1 ohm, 1 ms)

Damping factor
>210 (20 Hz to 1 kHz, 8 ohms)
>120 (10kHz, 8 ohms)

Frequency response
20 Hz – 20 kHz (±0.3 dB)

Channel separation
>75 dB (1 kHz)
>70 dB (10 kHz)

Input sensitivity (70 W in 8 ohms)
510 mV

Power consumption, standby mode*
0.5 W

Maximum transmit power
7 dBm ± 2 dBm

THD (20 Hz – 20 kHz)
<0.05 % at 70 W out 8 ohms

Signal-to-Noise Ratio
>82 dB (10 mV in; A-weighted, 1 W out)

Input impedance (R and C)
46 kohms/100 pF

Input sensitivity
3.95mV (60W out 1kHz, 8 ohms, volume maximum)

Frequency response
20 Hz – 20 kHz (±0.3 dB)

Note: The RIAA response is consistent with a pre-emphasis that is rolled off at 50 kHz by a second order filter, such as used in Neumann cutting lathes.
Maximum input signal at 1 kHz
>63 mVrms (0.1 % THD)

THD (20 Hz – 20 kHz)
<0.05 % at 70 W out 8 ohms
<0.05 % at 120 W out 4 ohms

Signal-to-Noise Ratio
>90 dB (-13 dBFS in, A-weighted 1 W out)

Input sensitivity (70W 8 ohms)
-12 dBFS

Sample rate
44.1 kHz – 192 kHz

Channel separation
>75 dB (1 kHz)
>70 dB (10 kHz)

Frequency response
20 Hz – 20 kHz (±0.3 dB)

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