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NAD C 328

Stereo integrated amplifier with built-in DAC and Bluetooth®

7 Reviews

Item # 745C328

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Our take on the NAD C 328

The NAD C 328 integrated amplifier lets you connect digital and analog music sources. You can also stream music from any Bluetooth enabled device, like a smartphone, tablet, or computer.Use the C 328's optical and coaxial digital inputs to take advantage of its built-in high-quality DAC. You'll hear crystal-clear stereo sound from sources like a CD player or TV.

Clean amplification for analog and digital sources

The NAD C 328 integrated amplifier lets you connect digital and analog music sources. You can also stream music from any Bluetooth enabled device, like a smartphone, tablet, or computer.Use the C 328's optical and coaxial digital inputs to take advantage of its built-in high-quality DAC. You'll hear crystal-clear stereo sound from sources like a CD player or TV.

The C 328 uses an advanced Class D amplifier design for consistent performance. Its highly efficient power supply provides a noise-free foundation, generating clean power with negligible distortion, to faithfully reproduce the energy and excitement of all your favorite music. A built-in high-performance headphone amplifier can drive even the most demanding studio monitor headphones.

Product Highlights:

  • 40 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.03% THD
  • 40 watts x 2 channels into 4 ohms (20-20,000 Hz) at 0.03% THD
  • 4-ohm stable for use with a wide range of speakers
  • Class D Asymmetrical PowerDrive amplifier design
  • 24-bit/192kHz digital-to-analog converter for high-performance playback of digitally connected sources such as a CD player
  • built-in Bluetooth for wireless music streaming from a compatible device
    • supports the aptX® codec for wirelessly streaming CD-quality sound
  • independent built-in high-output headphone amplifier
  • 4 digital audio inputs (2 optical/2 coaxial)
  • 3 stereo RCA audio inputs, including a phono input (for use with a moving magnet cartridge)
  • subwoofer output
  • full-size headphone jack
  • pair of binding post speaker connectors
  • detachable power cord
  • RS-232 port
  • remote control
  • signal-to-noise ratio: 95 dB line; 75 dB phono
  • 17-3/16"W x 2-13/16"H x 11-1/4"D
  • weight: 10.8 lbs.
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Stereo integrated amplifier
  • 6' AC power cord
  • Remote control (AMP 3)
  • CR2025 3V battery (installed in remote)
  • Bluetooth antenna
  • Quick Setup Guide
  • Warranty Card

NAD C 328 Reviews

Average Customer Review(s):

(7 Reviews)

NAD C 328

Crutchfield customer from Salt Lake City, UT on 12/25/2018

Crutchfield Customer Review (What's this?)

I like the simplicity of this amp - after looking online and at stores at dozens of options, keepong track of all the features, pros and cons of all the different amps out there, Harley at Crutchfield was super helpful in recommending the NAD C 328.



NAD C 328

Dave from Brown City, MI on 10/10/2018

Crutchfield Customer Review (What's this?)

Marvelous sounding amp. Thought I also purchased new speakers! That's how good it sounds. Playing through Yamaha bookshelves and a Yamaha powered sub. My vinyl collection sounds just as good. Bluetooth is flawless with my phone or my old Apple I Pod. Bass EQ adds just the right amount of "punch" if needed. Cool running unit. After hours of listening it is barely warm to the touch. A winner!

Pros: All the digital inputs. Excellent phono amp. Headphone amp is also great sounding.

Cons: None

NAD C 328

Crutchfield customer from Franklin IN on 9/18/2018

Crutchfield Customer Review (What's this?)

Very disappointed in this amp which is only good for streaming and CDs. Forget about good vinyl sound on this one! The bass/treble mech is woefully inadequate. Surprised NAD would put out this mess.



Overkill for a computer amplifier, but I love it!

Jose from Midway City, CA on 8/31/2018

Crutchfield Customer Review (What's this?)

This NAD integrated amplifier does not disappoint! I needed a stereo amplifier for my speakers connected to my computer so I splurged and I bought the NAD. Even though it does not have tone controls, the sound is amazing. I have it connected to OrbAudio speakers (4) and an OrbAudio mini subwoofer to my computer. I would say it's a bit of overkill, but I love it. The BlueTooth option is great. I can connect it to my tablet without problems. I am using an optical cable and the built-in DAC. If I could improve the NAD amplifier, I would add a USB option on the front. I like the power switch on the back so that it uses absolutely no power when it's off. I have not used the remote, but I'm glad it came with a remote. It has plenty of input options and a headphone output on the front. Overall, I am satisfied with Crutchfield service and the NAD amplifier. It makes my MP3s sound great!

Pros: sound, input options, headphone output on the front, power switch on the back, Bass EQ button, BlueTooth option

Cons: No USB connection, but I knew that when I bought it

Great sound- when it works

Guest from Libertyville, IL on 7/6/2018

Updating my earlier review. The WiFi connection is nothing but a hassle. Sometimes it works, sometimes it doesn't. NAD product is terrible, so when the NAD is having a bad day, which is all too frequent- I'm back to playing music off of a $100 Bluetooth speaker instead of my NAD and B&W set up. I think I would just do a couple Sonos speakers and my phone if I could do it over.



So far I love this amp.

Crutchfield customer from Lawrence, KS on 6/7/2018

Crutchfield Customer Review (What's this?)

I am using the C 328 with Magneplanar MMGs and a subwoofer. I replaced a big old Kenwood amp that died and chose the C 328 on the basis of reviews and how well it drives low impedance speakers. The design, a development of class D amplification, also appealed to me. The sound is excellent, transparent with no obvious coloring, contrasting with the "warm" sound of the Kenwood. Although I did not find a full manual in the box (easily found on line at the NAD site), set up was extremely easy. So far I have used it with HD files delivered by optical input, standard audio files delivered by optical input, vinyl via the phono input, line input from a television and from an iPad via bluetooth. In each case the sound was as good as one could expect from the source, often better than I anticipated. The only minor glitch I have had encountered is that twice it has lost its bluetooth connection to my iPad, perhaps when my iPad was auto-updating, and it was difficult to reestablish the connection. I had to switch off the amp at its switch on the back and then the connection was easily re-established. This is a very minor problem, however, hardly worth mentioning. Overall, I love this amp. I think NAD has fully accomplished its goals with this amp.



NAD C 328

Crutchfield customer from Tampa, FL on 1/9/2018

Crutchfield Customer Review (What's this?)

Great amp! Had some doubts about not having bass and treble controls, but it is not an issue, Love the DAC feature, makes my CD's sound fantastic.




Hands-on research

Features and Specs

Performance Specs
Watts RMS per Channel (8-ohms) 40
Watts RMS per Channel (6-ohms) Not given
Watts RMS per Channel (4-ohms) 40
Frequency Bandwidth 20-20k
THD 0.03%
Minimum Impedance 4 ohms
Signal to Noise Ratio 100
Digital Music Features
Built-in DAC (Digital to Analog Converter) Yes
High-resolution Audio Playback No
Bluetooth Yes
Wi-Fi N/A
Total Analog Inputs 3
Phono Input Yes
Optical Digital Inputs 2
Coaxial Digital Inputs 2
USB Input No
Preamp Outputs Subwoofer
Headphone Output 1/4"
Dimensions and Warranty
Width (inches) 17-1/8
Height (inches) 2-13/16
Depth (inches) 12-3/16
Weight (pounds) 10.8
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Hybrid Digital Amplification: NAD has moved away from the old-fashioned power-hungry linear power supplies and Class AB output stages that waste nearly half of the energy consumed and produce 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, this new Hybrid Digital Amplifier design is very linear over a wide bandwidth and provides consistent performance into all speaker loads, providing a dramatic advancement over previous Class AB and Class D amplifier designs.

  • Customized Hypex UcD Output Stage: The NAD 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 deliver best performance possible.
  • Efficient Power Supply: 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 power 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.

Full Disclosure Power (FDP): NAD uses Full Disclosure Power (FDP), the most demanding criterion for performance measurement. FDP specifies distortion under the most extreme conditions of low impedance loads and frequency extremes, rather than the simple and easy 1kHz @ 8 ohms test quoted by many of other manufactures. NAD uses this stricter performance criterion because it more closely matches the demands of real music and real loudspeakers. Maintaining specified distortion at 4/8Ω and at 20-20kHz is a much more difficult achievement. The benefit of NAD's Full Disclosure Power is the total elimination of audible distortion at any listening level. This provides pinpoint imaging and realism with music and movies alike.

  • Continuous Power: 40 watts x 2-channel (@ 20-20kHz, into 4Ω or 8Ω, at 0.03% THD, with both channels driven)
  • IHF Dynamic Power: 90 watts 2-channel into 8Ω  or 166 watts x 2-channel into 4Ω

Bass EQ: The Bass EQ function boosts overall bass response by at least 6dB.

Digital Inputs: The NAD C 328 is equipped with two optical (toslink) digital inputs and two coaxial (RCA) digital inputs. These digital inputs will support 2ch PCM audio up to 24-bit/192kHz (not compatible with Dolby Digital/DTS).

Analog Inputs: The NAD C 328's stereo RCA inputs (2 Line/1 Phono) can accommodate all kinds of analog 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.

MM Phono Stage w/ RIAA Equalization: The NAD C 328 hybrid digital integrated amplifier includes 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.

Bluetooth Audio Streaming: Built-in Bluetooth allows you to wirelessly stream your music library, music apps, podcasts, audiobooks, and other audio content on your Bluetooth source device (such as your smartphone, tablet, or laptop) to the NAD C 328. You can control basic playback functions (such as Play/Pause, Previous/Next Track, and Volume Up/Down) from the included IR remote. You can only pair and connect one device at a time.

Note: The included antenna must be connected to the rear-panel of the integrated amp in order for Bluetooth to work.

Discrete Headphone Amplifier: The NAD C 328 incorporates a discrete headphone amplifier with low output impedance and very high output voltage capability, enough to drive even high impedance studio monitor headphones. Connecting a set of headphone to unit's front-panel 1/4" jack will mute the speaker outputs. Volume, tone, and balance controls are all operable during headphone listening.

Binding Post Speaker Outputs: The speaker output terminals consist of four binding posts to connect a single pair of loudspeakers. The amplifier supports 4Ω to 8Ω speakers. These binding post terminals will accept bare wire (up to 10AWG), pin-connectors, spade-lugs, and banana plugs (single only). You'll need to remove the plastic inserts within the binding-post terminals to connect banana plugs.

Sub Out: The NAD C C328 is equipped with a mono-RCA subwoofer output for connection of a powered sub. The subwoofer out features a fixed low-pass crossover set a 100Hz.

IR Remote: The included IR remote provides wireless operation of the C 328 hybrid digital integrated amplifier and basic playback control of your connected Bluetooth source device.

RS-232 Port: The RS-232 port allows connection to a compatible PC or external whole-house control system. NAD is a certified partner of Control4, Crestron, RTI, URC, AMX, Savant, & Elan.

Auto Sense & Auto Standby: The Auto Sense feature enables the C 328 to wake up from standby mode when triggered by an active analog or digital source input with an audio signal. The C 328 can also be setup to automatically go into standby mode if there is no user interface interaction and no active source input for 20 minutes.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.