The C 399 BluOS-D is a Streaming Integrated Amplifier by NAD that delivers 180 watts x 2 channels into 8 ohms and 180 watts x 2 channels into 4 ohms. It was released in September 2021. Minimum impedance of 4 ohms makes the C 399 BluOS-D compatible with a wide range of loudspeakers. Thanks to its built-in ESS Sabre ES9028 DAC, you can play digital sources directly without the need for an external DAC unit. NAD C 399 BluOS-D lets you connect your turntable via its Phono input and start listening to your vinyl collection without a hassle. NAD C 399 BluOS-D has an MSRP of 2599$.
There are 10 NAD amplifiers in our database. Below you can see the main specs of these amps.
NAD Integrated Amplifier Series
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Performance Specs
One of the most important factors when deciding on an integrated amplifier is its power ratings and compatibility with your speaker's impedance requirements.The NAD C 399 BluOS-D is rated at 180 watts RMS into 8-ohms. NAD provides this wattage at a THD (Total Harmonic Distortion) of 0.02% which is an important indicator of distortion at the given values (lower THD is better).
Here are the main highlights of its performance specs:
- 180 watts into 8-ohms (20-20k) at 0.02%
- 180 watts into 4-ohms
- 4-ohms Min Impedance (allows compatibility with a wide range of loudspeakers)
- 95dB Signal to Noise Ratio
How loud will 180 watts actually play in your room? →
Wiring more than one pair of speakers to it? Check the load first →
Which speakers suit the NAD C 399 BluOS-D?
180 W into 8 ohms, 180 W into 4, rated down to 4 ohms.
We rank every passive speaker we cover against it on power, impedance safety and current
delivery.
When pairing the NAD C 399 BluOS-D with a passive Bookshelf (Stand mount) or Passive Floor Standing (Tower) speaker, you have to check if their Max Power Range is below the max wattage of the amp for the given impedance levels.
Operating your amp outside of this max range may damage the speakers.
What size of room is the NAD C 399 BluOS-D Amplifier good for?
An essential deciding factor is the size of the room in which you intend to employ the NAD C 399 BluOS-D amplifier. Here, taking into account its maximum power parameters, we analyzed its applicability to various size environments:
| Listening Environment |
Suitability |
| Near-field | Are you nuts? |
| Small Room | Bad |
| Mid-size Room | Poor |
| Large Room | Good |
| Very Large Room | Good |
Inputs and Outputs
Besides the performance specs of the NAD C 399 BluOS-D, the next important feature set that you have to evaluate is the input and output selections that it offers.
NAD C 399 BluOS-D has total of 2 Analog inputs including 1 Phono Input (MM).
NAD C 399 BluOS-D Back View (Click the image for the larger version)
Inputs
- Total Number of Analog Inputs: 2
- Phono Input
- 2 Optical Digital Input
- 2 Coaxial Digital Input
- USB Input:
- USB-A(Service Only)
- USB-A(Thumbdrive/External HD)
- USB-B(Service Only0
- HDMI Input (eARC)
Outputs
- Speaker Outputs (A/B switchable)
- Stereo RCA, Sub Preamp Outputs
- 1/4 Headphone Output
- Subwoofer Output (2)
Bluetooth Connectivity
NAD C 399 BluOS-D features built-in Bluetooth 4.0 for wireless music streaming from your Bluetooth-enabled devices such as Apple iPod/iPhone/iPad, Android smartphone/tablet, Windows PC, Mac computers/laptops.
Among the amps in the same price range, these are the 5 amps that have Bluetooth Connectivity:
NAD C 399 BluOS-D supports the following Bluetooth Codecs when used with supported devices:
Bluetooth Transmitter:NAD C 399 BluOS-D can also act as a Bluetooth transmitter, making it possible to stream the music from the amp to your bluetooth headphones or speakers.
Phono Input
NAD C 399 BluOS-D features one Phono Input which is compatible with
MM (Moving Magnet) type of phono cartridges, you can connect your turntable with MM cartridges directly to this amp without the need for a phono preamp. If you are using an MC cartridge on your turntable, you need to use a phono preamp that has MC phono stage such as the
Cambridge Duo or the
iFi ZEN Phono.
Subwoofer Output
NAD C 399 BluOS-D has a dedicated subwoofer output which can be used to connect it directly to a powered subwoofer via an LFE(Low Frequency Effects) cable.
Check our
Powered Subwoofers page to find a subwoofer that will work with NAD C 399 BluOS-D amp and your speakers.
DAC and Digital Music
The NAD C 399 BluOS-D's built-in DAC allows the connection of digital sources directly, eliminating the need for an external DAC. The DAC chip that is used in the C 399 BluOS-D is the
ESS Sabre ES9028, and supports resolutions up to
32-bit, 384KHZ.
NAD C 399 BluOS-D External Dimensions and Weight
NAD C 399 BluOS-D has external dimensions of (H x W x D) 4-13/16inch x 17-1/8inch x 16-7/16inch (123.0mm x 435.0mm x 418.0mm ). The unit weighs
11.23 kg (24.7 lbs).
Base Surface Area
Base surface area of an integrated amplifier may become an important decision factor when the space in your room or desk is limited.
The base area of the NAD C 399 BluOS-D is approximately 1818.3cm2 / 281.8inch2.
- Width: 435.0mm (17-1/8")
- Height: 123.0mm (4-13/16")
- Depth: 418.0mm (16-7/16")
- Weight: 11.23 kg (24.7 lbs)
- Base Surface Area: ~1818.3cm2 / 281.8inch2
- Volume: ~22.4 liter / 5.9 gallon
Available colors
NAD C 399 BluOS-D is available in Black color options.
What's in the Box of NAD C 399 BluOS-D?
Here are the items that are included inside the box of C 399 BluOS-D:
- Integrated amplifier
- 6-feet AC power cord
- Remote control (SR 9)
- 2 AA batteries
- 3 Antennas
- Auto calibration microphone
- USB microphone adapter
- Quick Setup Guide
- Internet Update Guidlines
- Important Safety Instructions
- Dirac Live Quickstart Guide
- Warranty Card
Official Product Page
Official manufacturer's product page for the NAD C 399 BluOS-D Integrated Amplifier can be found below:
Official Product Page for NAD C 399 BluOS-D
Warranty
2 Years of parts warranty and 2 Years of labor warranty is generally provided for the NAD C 399 BluOS-D by the manufacturer.
NAD C 399 BluOS-D Lifestyle
| General |
| Brand |
NAD |
| Full Model Name |
NAD C 399 BluOS-D |
| Release Date |
September 2021 |
| Amplifier Type |
Integrated Amplifier |
| Amp Class |
Class D |
| Performance |
| Watts RMS per Channel into 8-ohms |
180 watts |
| Watts RMS per Channel into 6-ohms |
N/A |
| Watts RMS per Channel into 4-ohms |
180 watts |
| Frequency Bandwidth |
20-20k |
| THD |
0.02% |
| Minimum Impedance |
4 |
| Signal to Noise Ratio |
95 dB |
| Digital Music |
| Built-in DAC |
Yes |
| DAC Specs |
ESS Sabre ES9028 |
| Bluetooth |
Yes |
| WiFi |
802.11ac |
| Ecosystem |
| Apple AirPlay |
Yes |
| Apple AirPlay2 |
Yes |
| DTS Play-Fi |
No |
| Chromecast built-in |
No |
| Roon |
Ready |
| HEOS |
No |
| BluOS |
Yes |
| CONNECTIONS |
| Total Analog Inputs |
2 |
| Phono Input |
Yes |
| Optical Digital Inputs |
2 |
| Coaxial Digital Inputs |
2 |
| USB Input |
Yes |
| USB Type |
USB-A(Service Only),USB-A(Thumbdrive/External HD),USB-B(Service Only0 |
| Preamp Outputs |
Stereo RCA, Sub |
| Pre-out / Main-in Loop |
No |
| Headphone Output |
1/4 |
| Subwoofer Output |
Yes |
| Removable Power Cord |
IEC 3-prong |
| PHYSICAL SPECS |
| Height |
123.0mm (4-13/16") |
| Width |
435.0mm (17-1/8") |
| Depth |
418.0mm (16-7/16") |
| Weight |
11.23 kg (24.7 lbs) |
| Available Colors |
Black |
| OTHER |
| Tone Controls |
Yes |
| Parts Warranty |
2 Years |
| Labor Warranty |
2 Years |