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Technics SU-GX70 vs Marantz Model 40n
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Technics SU-GX70

Integrated Amplifier | 30 watts RMS into 8-ohms

Technics SU-GX70
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Marantz Model 40n

Integrated Amplifier | 70 watts RMS into 8-ohms

Marantz Model 40n
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Technics SU-GX70 Technics SU-GX70
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Marantz Model 40n Marantz Model 40n
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Technics SU-GX70
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Marantz Model 40n
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Technics SU-GX70 vs Marantz Model 40n Integrated Amplifier Comparison

In this review, we will be comparing SU-GX70 and Model 40n, two Integrated Amplifiers from Technics and Marantz. Let's have a brief look at the main features of Technics SU-GX70 and Marantz Model 40n first before getting into our more detailed comparison.

Technics SU-GX70 Key Specs

  • 30 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • USB Input
  • Bluetooth v5.1
  • HDMI Input (ARC)
  • Weight: 14.60 lbs / 6.64 kg
  • Built-in Room Correction
  • Dimensions (H x W x D):3-15/16inch x 16-15/16inch x 15-5/8inch

Marantz Model 40n Key Specs

  • 70 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • USB Input
  • HDMI Input (ARC)
  • Bluetooth v4.2
  • Weight: 23.81 lbs / 10.82 kg
  • Dimensions (H x W x D):5-1/8inch x 17-3/8inch x 19-1/16inch

What size room are the Technics SU-GX70 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 Technics SU-GX70 Marantz Model 40n
Near-field Good Poor
Small Room Good Average
Mid-size Room Average Good
Large Room Poor Average
Very Large Room No way Poor

In the following sections, we will get into more detail in order to understand how Technics SU-GX70 and Marantz Model 40n 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 Technics SU-GX70 over Marantz Model 40n
MSRP Price(*) 1,999USD vs 2,499USD costs less (*prices may change depending on the seller, location and time)
Built-in Room Correction Yes vs No Adjusts audio output to compensate for acoustic anomalies in a listening space
Bluetooth Version v5.1 vs v4.2 Higher transfer rate and range
Optical Digital Inputs 2 vs 1 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 1711.1cm2/ 265.2inch2 vs 2126.0cm2/ 329.5inch2 takes less space in your room
Height 101mm vs 131mm Easier to fit in smaller spaces

Reasons to choose Marantz Model 40n over Technics SU-GX70
Watts into 8-ohms 70 watts vs 30 watts Delivers higher power into 8-ohms speakers
Watts into 4-ohms 100 watts vs 60 watts Delivers higher power into 4-ohms speakers
Total Harmonic Distortion (THD) 0.02% vs 1% Less Harmonic Distortion
Total Analog Inputs 3 vs 2 More options for connecting Analog sources
Roon Tested vs No Roon Compatibility
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 Technics SU-GX70 and Marantz Model 40n differs from each other.

Technics SU-GX70 Inputs
  • Total Number of Analog Inputs: 2
  • Phono Input
  • 2 Optical Digital Input
  • 1 Coaxial Digital Input
  • USB Input:
    • USB-A input for connecting a thumb drive
    • USB-B input for connecting a computer
  • HDMI ARC
  • 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
Technics SU-GX70 Back View
Technics SU-GX70 Back View (Click the image for the larger version)

Outputs
  • Stereo RCA Preamp Outputs
  • 1/4 Headphone Output
Outputs
  • Sub Preamp Outputs
  • 1/4 Headphone Output
  • Subwoofer Output
Marantz Model 40n Back View
Marantz Model 40n Back View (Click the image for the larger version)

What's in the Box of Technics SU-GX70?

Here are the items that are included inside the box of SU-GX70:
  • Network audio amplifier
  • 5-feet AC power cord
  • Remote control (N2QAYA000239)
  • 2 -inchAAA-inch batteries
  • FM antenna
  • Bsic Owners Manual
  • Software Licenses
  • 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
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