Rotel S14 vs NAD C 399 BluOS-D Detailed Comparison

Rotel S14 vs NAD C 399 BluOS-D

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Rotel S14

Integrated Amplifier | 80 watts RMS into 8-ohms

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NAD C 399 BluOS-D

Integrated Amplifier | 180 watts RMS into 8-ohms

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Rotel S14

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NAD C 399 BluOS-D

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Rotel S14

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NAD C 399 BluOS-D

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Rotel S14 vs NAD C 399 BluOS-D Integrated Amplifier Comparison

In this review, we will be comparing two different types of amplifiers. Rotel S14 is a Integrated Amplifier with built-in DAC speaker whereas the C 399 BluOS-D is a Streaming Integrated Amplifier speaker.

Let's have a brief look at the main features of Rotel S14 and NAD C 399 BluOS-D first before getting into our more detailed comparison.

Key Specs	Rotel S14	NAD C 399 BluOS-D
Power	80 watts x 2 channels into 8 ohms and 150 watts x 2 channels into 4 ohms	180 watts x 2 channels into 8 ohms and 180 watts x 2 channels into 4 ohms
Amplifier class	Class AB	Class D
Built-in DAC	Yes	Yes
Phono input	No	Yes
Headphone output	3.5mm	1/4
Bluetooth	Yes	Yes
App control	Yes	—
Weight	9.17kg / 20.2lbs	11.23kg / 24.7lbs
Dimensions (H x W x D)	3-5/8" x 17" x 14-13/16" 93.0mm x 432.0mm x 377.0mm	4-13/16" x 17-1/8" x 16-7/16" 123.0mm x 435.0mm x 418.0mm

What size room are the Rotel S14 and NAD C 399 BluOS-D 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	Rotel S14	NAD C 399 BluOS-D
Near-field	Poor	Are you nuts?
Small Room	Average	Bad
Mid-size Room	Good	Poor
Large Room	Average	Good
Very Large Room	Poor	Good

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

**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Rotel S14 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)
Full-color Display	Yes vs No	Displays Album and device Info
App-Based Control	Yes vs None	Control the amplifier via an app
Signal to Noise Ratio	100 dB vs 95 dB	Higher ratings results in cleaner sound
Coaxial Digital Inputs	No vs 2	More options for connecting Digital sources
Built-in Chromecast	Yes vs No	Compatible with Chromecast Streaming
Built-in Chromecast	Yes vs No	Compatible with Chromecast Streaming
Base Surface Area	1628.0cm²/ 252.3inch² vs 1818.3cm²/ 281.8inch²	takes less space in your room
Height	93mm vs 123mm	Easier to fit in smaller spaces

Reasons to choose NAD C 399 BluOS-D over Rotel S14

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 80 watts	Delivers higher power into 8-ohms speakers
Watts into 4-ohms	180 watts vs 150 watts	Delivers higher power into 4-ohms speakers
Total Harmonic Distortion (THD)	0.02% vs 0.04%	Less Harmonic Distortion
Total Analog Inputs	2 vs 1	More options for connecting Analog sources
PhonoInput	Yes vs No	Connect a turntable directly to your amp
Optical Digital Inputs	2 vs 1	More options for connecting Digital sources
Coaxial Digital Inputs	2 vs No	More options for connecting Digital sources
BluOS	Yes vs No	Compatible with BluOS Wireless Ecosystem

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 Rotel S14 and NAD C 399 BluOS-D differs from each other.

Rotel S14 Inputs

Total Number of Analog Inputs: 1
1 Optical Digital Input
USB Input:
- USB Type A input for connecting a flash drive
- USB Type B input for connecting a computer
Ethernet Port

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

Rotel S14 Back View (Click the image for the larger version)

Outputs

Stereo RCA, Sub Preamp Outputs
3.5mm Headphone Output
Subwoofer Output

Outputs

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

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

What's in the Box of Rotel S14?

Here are the items that are included inside the box of S14:

Stereo integrated amplifier
58-inch AC power cord
Remote control
CR2035 3V battery (pre-installed)
2 Wifi antennas
1 Bluetooth antenna
5-feet USB-B to USB-A cable
57-inch Ethernet cable
USB Audio Driver thumbdrive
Hex-key
Quick Installation Guide
Important Safety Instructions
Addendum For Roon Ready
Spotify Connect Instructions

What's in the Box of NAD C 399 BluOS-D?

Here are the items that come with the 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