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Naim Uniti Atom vs Anthem STR Integrated Amplifier
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Naim Uniti Atom

Integrated Amplifier | 40 watts RMS into 8-ohms

Naim Uniti Atom
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Anthem STR

Integrated Amplifier | 200 watts RMS into 8-ohms

Anthem STR Integrated Amplifier
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Naim Uniti Atom Naim Uniti Atom
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Anthem STR Anthem STR
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Naim Uniti Atom
See at AMAZON
Anthem STR
See at AMAZON
Naim Uniti Atom vs Anthem STR Integrated Amplifier Comparison

In this review, we will be comparing Uniti Atom and STR Integrated Amplifier, two Integrated Amplifiers from Naim and Anthem. Let's have a brief look at the main features of Naim Uniti Atom and Anthem STR first before getting into our more detailed comparison.

Naim Uniti Atom Key Specs

  • 40 watts RMS into 8-ohms
  • Built-in DAC
  • Bluetooth v3.0
  • HDMI Input (ARC)
  • Weight: 15.40 lbs / 7.00 kg
  • Dimensions (H x W x D):3-3/4inch x 9-11/16inch x 12-7/16inch

Anthem STR Key Specs

  • 200 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • USB Input
  • Built-in Room Correction
  • Weight: 40.00 lbs / 18.18 kg
  • Dimensions (H x W x D):6-13/16inch x 17inch x 17-9/16inch

What size room are the Naim Uniti Atom and Anthem STR 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 Naim Uniti Atom Anthem STR
Near-field Good Are you nuts?
Small Room Good Bad
Mid-size Room Average Poor
Large Room Poor Good
Very Large Room No way Good

In the following sections, we will get into more detail in order to understand how Naim Uniti Atom and Anthem STR compares and end up with enough arguments to decide which one of these amplifiers is the better choice for you.


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


Reasons to choose Naim Uniti Atom over Anthem STR Integrated Amplifier
MSRP Price(*) 3,799USD vs 5,000USD 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
Bluetooth Yes vs No Stream music via Bluetooth devices
Wi-Fi Yes vs No High quality streaming over WiFi
Headphone Output 3.5mm vs No Connect your headphone to the amplifier
Built-in Chromecast Yes vs No Compatible with Chromecast Streaming
Roon Ready vs No Roon Compatibility
Built-in Chromecast Yes vs No Compatible with Chromecast Streaming
Max Sample Rate 384kHz vs 192kHz Play higher resolution media
Base Surface Area 780.5cm2/ 121.0inch2 vs 1931.0cm2/ 299.3inch2 takes less space in your room
Height 96mm vs 174mm Easier to fit in smaller spaces

Reasons to choose Anthem STR Integrated Amplifier over Naim Uniti Atom
Built-in Room Correction Yes vs No Adjusts audio output to compensate for acoustic anomalies in a listening space
Watts into 8-ohms 200 watts vs 40 watts Delivers higher power into 8-ohms speakers
Total Harmonic Distortion (THD) 1% vs Not given Less Harmonic Distortion
Minimum Impedance 2 ohms vs 4 ohms Compatible with 2-ohms speakers
Total Analog Inputs 5 vs 1 More options for connecting Analog sources
PhonoInput Yes vs No Connect a turntable directly to your amp
Coaxial Digital Inputs 2 vs 1 More options for connecting Digital sources
USB Input Yes vs --- Connect Sources via USB

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 Naim Uniti Atom and Anthem STR differs from each other.

Naim Uniti Atom Inputs
  • Total Number of Analog Inputs: 1
  • 2 Optical Digital Input
  • 1 Coaxial Digital Input
  • HDMI ARC
  • Ethernet Port
Anthem STR Inputs
  • Total Number of Analog Inputs: 5
  • Phono Input
  • 2 Optical Digital Input
  • 2 Coaxial Digital Input
  • USB Input:
    • USB-B(connect to your computer to playback files)
  • Ethernet Port
  • XLR Input Port
Naim Uniti Atom Back View
Naim Uniti Atom Back View (Click the image for the larger version)

Outputs
  • Stereo RCA Preamp Outputs
  • 3.5mm Headphone Output
Outputs
  • 2 Preamp Outputs
  • Subwoofer Output
Anthem STR Back View
Anthem STR Back View (Click the image for the larger version)

What's in the Box of Naim Uniti Atom?

Here are the items that are included inside the box of Uniti Atom:
  • Integrated network amplifier
  • 6.5-feet AC power cord
  • Remote control
  • 4 AAA batteries
  • 2 Speaker plugs
  • Cleaning cloth
  • Quick Start Guide
  • Safety Manual
  • Warranty/Registration Card
  • Naim brochure
  • Spotify brochure
  • What's in the Box of Anthem STR?

    Here are the items that come with the STR Integrated Amplifier:
  • Stereo integrated amplifier
  • AC power cord
  • Remote control (RC-ST 1)
  • 2 AAA batteries
  • USB-B to USB-A cable
  • miniUSB-to-USB cable
  • 3.5mm Microphone cable
  • USB microphone
  • Mic clip
  • Telescopic stand w/ boom
  • Ethernet cable
  • Operating Manual
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