NAD Electronics C 328 Hybrid Digital Integrated Amplifier

Expansive Power with Unprecedented Flexibility

The C 328 ties together all the critical elements of a top performing music system; music sources past and present while providing a deep reservoir of power that allows your speakers to reveal every nuance of musical detail. This advanced amplifier includes many cutting edge technological breakthroughs developed by NAD over a 45-year history of creating affordable ultra-high performance audio components.

It is surprising how many seemingly advanced products in the market today often miss the most basic requirements for satisfying performance such as low noise circuits precise volume control action accurate channel balance proper input and output impedance characteristics high overload margins and stability with difficult speaker loads. NAD starts by getting these things precisely right and advances from there. With the C328 they've include an MM Phono stage with precisely accurate 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.

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
• Getting the basics right

True High-End Quality

The line inputs can accommodate all kinds of analogue source components by offering ideal input impedance characteristics with linear ultra-low-noise buffer amplifiers to prevent any sonic degradation caused by inappropriate loading of the source device. This amplifier includes a separate headphone amplifier with low output impedance and very high output voltage capability – enough to drive even high impedance studio monitor headphones. The low impedance line outputs can connect to a subwoofer to extend the versatility of this well-thought-out amplifier. These are all details you can hear.

Stream Music from Any Device

You can connect instantly to the C 328 with Bluetooth allowing you to stream music wirelessly from your smart device. Because of the high performance digital circuitry included in the C 328 Bluetooth sounds much better than you remember.

Sophisticated Power

NAD has moved away from the old fashioned and power-hungry linear power supplies and Class AB output stages that waste nearly half of the energy consumed producing heat rather than sound. Instead 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 created some of the best performing amplifiers regardless of the basic design principle. These new designs are very linear over a wide bandwidth and provide consistent performance into all speaker loads providing a dramatic advance over previous models.

The power supply features plenty of headroom able to provide on demand over 100 watts of audio output when needed. It can operate with any AC mains voltage from 100V to 240V and provides pure DC power to all the various stages of the C 328. This highly 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 unmeasurable distortion and noise in the audible range. Every detail of this design has been carefully crafted and perfectly executed to wring out every last drop of performance.

What's in the Box

• C 328 Hybrid Digital Integrated Amplifier
• Remote
• Bluetooth Antenna
• Power Cord
• Quick Setup Guide

Specifications

• Analog In/Headphone Out
  • THD (20Hz - 20kHz): <0.005% at 1V out
  • Signal-to-noise ratio: >100dB (A-weighted 32 ohms reference 2V out unity gain)
  • Frequency response: ±0.3dB (20Hz - 20kHz)
  • Output impedance: 11 ohms
• Analog In/Subwoofer Out
  • THD (20Hz - 20kHz): <0.005% at 1V out
  • Signal-to-noise ratio: >100dB (A-weighted 32 ohms reference 2V out unity gain)
  • Frequency response: ±0.2dB (20Hz - 20kHz)
  • Gain: 17dB
  • Output impedance: 200 ohms
• Analog In/Speaker Out
  • Continuous output power into 8 ohms and 4 ohms: 50W (reference 20Hz - 20kHz at rated THD both channels driven)
  • THD (20Hz - 20kHz): <0.03% (100mW to 40W 8 ohms and 4 ohms)
  • Signal-to-noise ratio: >95dB (A-weighted 500mV input reference 1W out 8 ohms)
  • Gain: 37dB
  • Clipping power: >50W (at 1kHz 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 (20Hz - 20kHz)
  • Frequency response: ±3dB (20Hz - 20kHz)
  • Channel separation: >85dB (1kHz)
  • Input sensitivity: 250mV
  • Standby power: <0.5W
• Digital In/Speaker Out
  • THD (20Hz - 20kHz): <0.03% (100mW to 40W 8 ohms and 4 ohms)
  • Signal-to-noise ratio: >95dB (A-weighted -12dBFS input reference 1W out in 8 ohms)
  • Frequency response: ±3dB (20Hz - 20kHz)
  • Gain: 47dB (Vrms/FS)
  • Channel separation: >80dB (1kHz)
• Dimensions and Weight
  • Gross dimensions (W x H x D): 17 1/8" x 2 13/16" x 11 1/4"
  • Weight: 10.8 lbs.