NAD C 399 BluOS-D vs Marantz Model 40n Detailed Comparison

NAD C 399 BluOS-D vs Marantz Model 40n

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NAD C 399 BluOS-D

Integrated Amplifier | 180 watts RMS into 8-ohms

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Marantz Model 40n

Integrated Amplifier | 70 watts RMS into 8-ohms

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NAD C 399 BluOS-D

Check price atAmazon›

Marantz Model 40n

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NAD C 399 BluOS-D

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Marantz Model 40n

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NAD C 399 BluOS-D vs Marantz Model 40n Integrated Amplifier Comparison

In this review, we will be comparing C 399 BluOS-D and Model 40n, two Integrated Amplifiers from NAD and Marantz. Let's have a brief look at the main features of NAD C 399 BluOS-D and Marantz Model 40n first before getting into our more detailed comparison.

Key Specs	NAD C 399 BluOS-D	Marantz Model 40n
Power	180 watts x 2 channels into 8 ohms and 180 watts x 2 channels into 4 ohms	70 watts x 2 channels into 8 ohms and 100 watts x 2 channels into 4 ohms
Amplifier class	Class D	Class A/B
Built-in DAC	Yes	Yes
Phono input	Yes	Yes
Headphone output	1/4	1/4
Bluetooth	Yes	Yes
Weight	11.23kg / 24.7lbs	10.82kg / 23.8lbs
Dimensions (H x W x D)	4-13/16" x 17-1/8" x 16-7/16" 123.0mm x 435.0mm x 418.0mm	5-1/8" x 17-3/8" x 19-1/16" 131.0mm x 442.0mm x 481.0mm

What size room are the NAD C 399 BluOS-D and Marantz Model 40n Amplifiers good for?

The size of the room in which you are planning to use these amplifiers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their max power parameters:

Listening Environment	NAD C 399 BluOS-D	Marantz Model 40n
Near-field	Are you nuts?	Poor
Small Room	Bad	Average
Mid-size Room	Poor	Good
Large Room	Good	Average
Very Large Room	Good	Poor

The sections below take each area in turn: power output, inputs and outputs, features and physical size.

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Reasons to choose NAD C 399 BluOS-D over Marantz Model 40n

Built-in Room Correction	Yes vs No	Adjusts audio output to compensate for acoustic anomalies in a listening space
Watts into 8-ohms	180 watts vs 70 watts	Delivers higher power into 8-ohms speakers
Watts into 4-ohms	180 watts vs 100 watts	Delivers higher power into 4-ohms speakers
Optical Digital Inputs	2 vs 1	More options for connecting Digital sources
Coaxial Digital Inputs	2 vs 1	More options for connecting Digital sources
BluOS	Yes vs No	Compatible with BluOS Wireless Ecosystem
Max Bit Depth	32-bit vs 24-bit	Play higher resolution range media
Max Sample Rate	384kHz vs 192kHz	Play higher resolution media
Base Surface Area	1818.3cm²/ 281.8inch² vs 2126.0cm²/ 329.5inch²	takes less space in your room
Height	123mm vs 131mm	Easier to fit in smaller spaces

Reasons to choose Marantz Model 40n over NAD C 399 BluOS-D

MSRP Price(*)	2,499USD vs 2,599USD	costs less (*prices may change depending on the seller, location and time)
Signal to Noise Ratio	106 dB vs 95 dB	Higher ratings results in cleaner sound
Bluetooth Version	v4.2 vs v4.0	Higher transfer rate and range
Total Analog Inputs	3 vs 2	More options for connecting Analog sources
HEOS	Yes vs No	Compatible with HEOS Wireless Multi-Room Sound System

Inputs and Outputs

The input and output selections that are offered is an important factor when comparing two amplifiers. Here you can find how the I/O selections of the NAD C 399 BluOS-D and Marantz Model 40n differs from each other.

NAD C 399 BluOS-D 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 eARC
Ethernet Port

Marantz Model 40n Inputs

Total Number of Analog Inputs: 3
Phono Input
1 Optical Digital Input
1 Coaxial Digital Input
USB Input:
HDMI ARC
Ethernet Port

NAD C 399 BluOS-D Back View (Click the image for the larger version)

Outputs

Stereo RCA, Sub Preamp Outputs
1/4 Headphone Output
Subwoofer Output

Outputs

Sub Preamp Outputs
1/4 Headphone Output
Subwoofer Output

Marantz Model 40n Back View (Click the image for the larger version)

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

What's in the Box of Marantz Model 40n?

Here are the items that come with the Model 40n:

Integrated amplifier
6-feet AC power cord
Remote control (RC005PM)
2 AAA batteries
2 WiFi/Bluetooth antennas
Quick Start Guide Safety Instructions
Notes on Radio
Warranty Information
Spotify note
Heos brochure