NAD

NAD C 328 Integrated Amplifier / DAC

C 328 Integrated Amplifier / DAC

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NAD C 328 Integrated Amplifier / DAC

For 45 years, NAD Electronics has introduced aspiring audiophiles to the vast world of hi-fi. From our flagship Masters Series, to our budget-friendly Classic Series, NAD has a component for everyone. Following in the footsteps of some of NAD’s greatest units, the NAD C 328 delivers the most fundamental of features, while firmly adhering to NAD’s unwavering commitment to exquisite sound. 

The C 328 can wirelessly connect to any smartphone, tablet, or Bluetooth®-enabled device within range, to give you a seamless listening experience. Featuring a MM phono input, the C 328 breathes new life into vinyl LPs, thanks in part to NAD’s innovative Hybrid Digital™ amp technology. The C 328 also features a headphone amplifier, letting you connect your favorite headphones and settle back into your own world of detailed sound. Although more modest in comparison to other Classic Series amplifiers, the C 328 will fit perfectly into your existing system and bring you the musical nirvana you’ve been searching for.

Getting the Basics Right

When it comes to Classic Series amplifiers, no feature is overlooked. Low noise circuits, precise volume control action, and accurate channel balance are all key characteristics of the C 328. With the added bonus of proper input and output impedance traits, plus high overload margins and stability with difficult speaker loads, the C 328 is the best choice for audiophiles who are just starting to build their dream systems. The C 328 also includes a MM phono stage with precisely correct RIAA equalization, high overload margins, extremely low noise, and an innovative circuit to suppress infrasonic noise that is present on all LPs—all without affecting bass response.

Versatility in Spades

The line inputs of the C 328 can accommodate all kinds of analogue source components. It offers ideal input impedance attributes with linear, ultra-low noise buffer amplifiers to prevent any sonic degradation caused by improper loading of the source device. The C 328 also features a separate headphone amplifier with low output impedance and very high output voltage capability, enough in fact to drive even high impedance studio monitor headphones. The low impedance line outputs can also connect to a subwoofer to further extend the versatility of the C 328.

Ready for Streaming

With support for Bluetooth, you can instantly connect and listen to the music service of your choice, or wirelessly stream music and playlists stored directly on your smartphone, tablet or computer. Plus, with its high performance digital circuitry, Bluetooth streaming has never sounded as good as it does with the C 328.

Sophisticated Power

Since moving away from old-fashioned linear power supplies and Class AB output stages, NAD has developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, NAD’s advanced work in this area has led to some of the best performing amplifiers on the market today. These new designs are linear over a wide bandwidth and provide consistent performance into all speaker loads, delivering a dramatic advancement.

The power supply of the C 328 is able to provide over 100 watts of audio output when needed. The C 328 can operate with any AC mains voltage from 100V to 240V and provides pure DC power to all of its various stages. This extremely efficient supply also provides near perfect regulation of voltage across a wide range of conditions and provides a solid noise-free foundation for the amplifying stages.

The C 328 uses a customized version of the proven Hypex UcD output stage. This allows for massive power with nearly immeasurable distortion and noise in the audible range. Every detail of this design has been carefully crafted and perfectly executed to wring out the best performance possible. The perfect starter amp for audiophiles and music lovers alike, the C 328 will flawlessly deliver NAD’s signature flexibility and expansive power.

Product Features

  • 50W x 2 Continuous Power into 8 or 4 Ohms
  • Support for Bluetooth
  • MM Phono Input
  • Analogue Line Inputs
  • SPDIF Coax and Optical Inputs
  • Subwoofer Out
  • Headphone Amplifier
  • Bass EQ
  • IR Remote

Specifications

ANALOG IN/HEADPHONE OUT

THD (20 Hz – 20 kHz) <0.005 % at 1 V out
Signal-to-Noise Ratio >100 dB (A-weighted, 32 ohms, ref. 2V out, unity gain)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Output impedance 11 ohms

ANALOG IN/SUBWOOFER OUT

THD (20 Hz – 20 kHz) <0.005 % at 1 V out
Signal-to-Noise Ratio >100 dB (A-weighted, 32 ohms, ref. 2V out, unity gain)
Frequency response ±0.2 dB (20 Hz - 20 kHz)
Gain 17 dB
Output impedance 200 ohms

ANALOG IN/SPEAKER OUT

Continuous output power into 8 ohms and 4 ohms 50W (ref. 20 Hz-20 kHz at rated THD, both channels driven)
THD (20 Hz – 20 kHz) <0.03 % (100 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >95 dB (A-weighted, 500 mV input, ref. 1 W out 8 ohms)
Gain 37 dB
Clipping power >50 W (at 1 kHz 0.1 % THD)
IHF dynamic power 2 ohm 210w
4 ohm 150w
8 ohm 80w
Peak output current >18A (in 1 ohm, 1 ms)
Damping factor >100 (20 Hz - 20 kHz)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Channel separation >85 dB (1 kHz)
>70 dB (10 kHz)
Input sensitivity (for 40 W in 8 ohms) 250 mV
Standby power <0.5 W

PHONO IN/SPEAKER OUT

THD (20 Hz – 20 kHz) <0.03 % (200 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >75 dB with IHF MM cartridge (A-weighted, ref. 5mV input 1 kHz and 1W output in 8 ohms)
Frequency response (RIAA deviation) ±0.3 dB (20 Hz - 20 kHz)
Note: The RIAA response is consistent with a pre-emphasis that is rolled off at 50kHz by a second order filter, such as used in Neumann cutting lathes.
Channel separation >80 dB (1 kHz, 8 ohms, 50 mV input, 13W out)
>60 dB (10 kHz, 8 ohms, 50 mV input, 13W out)
Input sensitivity (for 40 W in 8 ohms) 3.6 mV

DIGITAL IN/SPEAKER OUT

THD (20 Hz – 20 kHz) <0.03 % (100 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >95 dB (A-weighted, -12 dBFS input, ref. 1W out in 8 ohms)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Gain 47 dB (Vrms/FS)
Channel separation >80 dB (1 kHz)
>70 dB (10 kHz)

DIMENSION AND WEIGHT

Dimensions (W x H x D) 435 x 70 x 285 mm
17 1/8 x 2 13/16 x 11 1/4 inches
Net Weight 4.9 kg (10.8 lbs)
Shipping weight 5.9 kg (13.0 lbs)

Description

C 328 Integrated Amplifier / DAC

For 45 years, NAD Electronics has introduced aspiring audiophiles to the vast world of hi-fi. From our flagship Masters Series, to our budget-friendly Classic Series, NAD has a component for everyone. Following in the footsteps of some of NAD’s greatest units, the NAD C 328 delivers the most fundamental of features, while firmly adhering to NAD’s unwavering commitment to exquisite sound. 

The C 328 can wirelessly connect to any smartphone, tablet, or Bluetooth®-enabled device within range, to give you a seamless listening experience. Featuring a MM phono input, the C 328 breathes new life into vinyl LPs, thanks in part to NAD’s innovative Hybrid Digital™ amp technology. The C 328 also features a headphone amplifier, letting you connect your favorite headphones and settle back into your own world of detailed sound. Although more modest in comparison to other Classic Series amplifiers, the C 328 will fit perfectly into your existing system and bring you the musical nirvana you’ve been searching for.

Getting the Basics Right

When it comes to Classic Series amplifiers, no feature is overlooked. Low noise circuits, precise volume control action, and accurate channel balance are all key characteristics of the C 328. With the added bonus of proper input and output impedance traits, plus high overload margins and stability with difficult speaker loads, the C 328 is the best choice for audiophiles who are just starting to build their dream systems. The C 328 also includes a MM phono stage with precisely correct RIAA equalization, high overload margins, extremely low noise, and an innovative circuit to suppress infrasonic noise that is present on all LPs—all without affecting bass response.

Versatility in Spades

The line inputs of the C 328 can accommodate all kinds of analogue source components. It offers ideal input impedance attributes with linear, ultra-low noise buffer amplifiers to prevent any sonic degradation caused by improper loading of the source device. The C 328 also features a separate headphone amplifier with low output impedance and very high output voltage capability, enough in fact to drive even high impedance studio monitor headphones. The low impedance line outputs can also connect to a subwoofer to further extend the versatility of the C 328.

Ready for Streaming

With support for Bluetooth, you can instantly connect and listen to the music service of your choice, or wirelessly stream music and playlists stored directly on your smartphone, tablet or computer. Plus, with its high performance digital circuitry, Bluetooth streaming has never sounded as good as it does with the C 328.

Sophisticated Power

Since moving away from old-fashioned linear power supplies and Class AB output stages, NAD has developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, NAD’s advanced work in this area has led to some of the best performing amplifiers on the market today. These new designs are linear over a wide bandwidth and provide consistent performance into all speaker loads, delivering a dramatic advancement.

The power supply of the C 328 is able to provide over 100 watts of audio output when needed. The C 328 can operate with any AC mains voltage from 100V to 240V and provides pure DC power to all of its various stages. This extremely efficient supply also provides near perfect regulation of voltage across a wide range of conditions and provides a solid noise-free foundation for the amplifying stages.

The C 328 uses a customized version of the proven Hypex UcD output stage. This allows for massive power with nearly immeasurable distortion and noise in the audible range. Every detail of this design has been carefully crafted and perfectly executed to wring out the best performance possible. The perfect starter amp for audiophiles and music lovers alike, the C 328 will flawlessly deliver NAD’s signature flexibility and expansive power.

Product Features

  • 50W x 2 Continuous Power into 8 or 4 Ohms
  • Support for Bluetooth
  • MM Phono Input
  • Analogue Line Inputs
  • SPDIF Coax and Optical Inputs
  • Subwoofer Out
  • Headphone Amplifier
  • Bass EQ
  • IR Remote

Specifications

ANALOG IN/HEADPHONE OUT

THD (20 Hz – 20 kHz) <0.005 % at 1 V out
Signal-to-Noise Ratio >100 dB (A-weighted, 32 ohms, ref. 2V out, unity gain)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Output impedance 11 ohms

ANALOG IN/SUBWOOFER OUT

THD (20 Hz – 20 kHz) <0.005 % at 1 V out
Signal-to-Noise Ratio >100 dB (A-weighted, 32 ohms, ref. 2V out, unity gain)
Frequency response ±0.2 dB (20 Hz - 20 kHz)
Gain 17 dB
Output impedance 200 ohms

ANALOG IN/SPEAKER OUT

Continuous output power into 8 ohms and 4 ohms 50W (ref. 20 Hz-20 kHz at rated THD, both channels driven)
THD (20 Hz – 20 kHz) <0.03 % (100 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >95 dB (A-weighted, 500 mV input, ref. 1 W out 8 ohms)
Gain 37 dB
Clipping power >50 W (at 1 kHz 0.1 % THD)
IHF dynamic power 2 ohm 210w
4 ohm 150w
8 ohm 80w
Peak output current >18A (in 1 ohm, 1 ms)
Damping factor >100 (20 Hz - 20 kHz)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Channel separation >85 dB (1 kHz)
>70 dB (10 kHz)
Input sensitivity (for 40 W in 8 ohms) 250 mV
Standby power <0.5 W

PHONO IN/SPEAKER OUT

THD (20 Hz – 20 kHz) <0.03 % (200 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >75 dB with IHF MM cartridge (A-weighted, ref. 5mV input 1 kHz and 1W output in 8 ohms)
Frequency response (RIAA deviation) ±0.3 dB (20 Hz - 20 kHz)
Note: The RIAA response is consistent with a pre-emphasis that is rolled off at 50kHz by a second order filter, such as used in Neumann cutting lathes.
Channel separation >80 dB (1 kHz, 8 ohms, 50 mV input, 13W out)
>60 dB (10 kHz, 8 ohms, 50 mV input, 13W out)
Input sensitivity (for 40 W in 8 ohms) 3.6 mV

DIGITAL IN/SPEAKER OUT

THD (20 Hz – 20 kHz) <0.03 % (100 mW to 40 W, 8 ohms and 4 ohms)
Signal-to-Noise Ratio >95 dB (A-weighted, -12 dBFS input, ref. 1W out in 8 ohms)
Frequency response ±0.3 dB (20 Hz - 20 kHz)
Gain 47 dB (Vrms/FS)
Channel separation >80 dB (1 kHz)
>70 dB (10 kHz)

DIMENSION AND WEIGHT

Dimensions (W x H x D) 435 x 70 x 285 mm
17 1/8 x 2 13/16 x 11 1/4 inches
Net Weight 4.9 kg (10.8 lbs)
Shipping weight 5.9 kg (13.0 lbs)

C 328 Integrated Amplifier / DAC