Rega Elex Mk4 vs NAD C 399 Detailed Comparison

Rega Elex Mk4 vs NAD C 399

Amp to replace

Change

Rega Elex Mk4

Integrated Amplifier | 72 watts RMS into 8-ohms

Check price atAmazon›

Change

NAD C 399

Integrated Amplifier | 180 watts RMS into 8-ohms

Check price atAmazon›

Rega Elex Mk4

Check price atAmazon›

NAD C 399

Check price atAmazon›

Rega Elex Mk4

See at AMAZON

NAD C 399

See at AMAZON

Rega Elex Mk4 vs NAD C 399 Integrated Amplifier Comparison

In this review, we will be comparing Elex Mk4 and C 399, two Integrated Amplifiers from Rega and NAD. Let's have a brief look at the main features of Rega Elex Mk4 and NAD C 399 first before getting into our more detailed comparison.

Key Specs	Rega Elex Mk4	NAD C 399
Power	72 watts x 2 channels into 8 ohms and 90 watts x 2 channels into 6 ohms	180 watts x 2 channels into 8 ohms and 180 watts x 2 channels into 4 ohms
Amplifier class	Class A/B	Class D
Built-in DAC	Yes	Yes
Phono input	Yes	Yes
Headphone output	Yes	1/4
Bluetooth	No	Yes
Weight	11.00kg / 24.2lbs	11.23kg / 24.7lbs
Dimensions (H x W x D)	3-1/4" x 17" x 13-3/8" 82 x 432 x 340 mm	4-13/16" x 17-1/8" x 16-7/16" 123.0mm x 435.0mm x 418.0mm

What size room are the Rega Elex Mk4 and NAD C 399 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	Rega Elex Mk4	NAD C 399
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 Rega Elex Mk4 over NAD C 399

MSRP Price(*)	1,895USD vs 1,999USD	costs less (*prices may change depending on the seller, location and time)
Total Analog Inputs	5 vs 2	More options for connecting Analog sources
Optical Digital Inputs	Yes vs 2	More options for connecting Digital sources
Coaxial Digital Inputs	Yes vs 2	More options for connecting Digital sources
Base Surface Area	1468.8cm²/ 227.7inch² vs 1818.3cm²/ 281.8inch²	takes less space in your room
Height	82mm vs 123mm	Easier to fit in smaller spaces

Reasons to choose NAD C 399 over Rega Elex Mk4

Watts into 8-ohms	180 watts vs 72 watts	Delivers higher power into 8-ohms speakers
Bluetooth	Yes vs No	Stream music via Bluetooth devices
USB Input	Yes vs No	Connect Sources via USB
Max Bit Depth	32-bit vs 24-bit	Play higher resolution range media
Max Sample Rate	384kHz vs 192kHz	Play higher resolution media

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 Rega Elex Mk4 and NAD C 399 differs from each other.

Rega Elex Mk4 Inputs

Total Number of Analog Inputs: 5
Phono Input
Yes Optical Digital Input
Yes Coaxial Digital Input

NAD C 399 Inputs

Total Number of Analog Inputs: 2
Phono Input
2 Optical Digital Input
2 Coaxial Digital Input
USB Input:
- USB-A(Service Only)
HDMI eARC

Outputs

Pre out and record out Preamp Outputs
Yes Headphone Output

Outputs

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

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

What's in the Box of NAD C 399?

Here are the items that come with the C 399:

Integrated amplifier
6-feet AC power cord
Remote control (SR 9)
2 AA batteries
Antenna
Quick Setup Guide
Important Safety Instructions
Warranty Card