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JBL SA550 Classic vs Technics SU-GX70
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JBL SA550 C

Integrated Amplifier | 90 watts RMS into 8-ohms

JBL SA550 Classic
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Technics SU-GX70

Integrated Amplifier | 30 watts RMS into 8-ohms

Technics SU-GX70
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JBL SA550 C JBL SA550 C
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Technics SU-GX70 Technics SU-GX70
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JBL SA550 C
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Technics SU-GX70
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JBL SA550 C vs Technics SU-GX70 Integrated Amplifier Comparison

In this review, we will be comparing two different type of speakers . JBL SA550 Classic is a Integrated Amplifier with built-in DAC speaker whereas the SU-GX70 is a Streaming Integrated Amplifier speaker.

Let's have a brief look at the main features of JBL SA550 C and Technics SU-GX70 first before getting into our more detailed comparison.

JBL SA550 C Key Specs

  • 90 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • USB Input
  • Bluetooth
  • Weight: 24.69 lbs / 11.22 kg
  • Dimensions (H x W x D):4-15/16inch x 17-3/4inch x 13-5/8inch

Technics SU-GX70 Key Specs

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

What size room are the JBL SA550 C and Technics SU-GX70 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 JBL SA550 C Technics SU-GX70
Near-field Poor Good
Small Room Average Good
Mid-size Room Good Average
Large Room Average Poor
Very Large Room Poor No way

In the following sections, we will get into more detail in order to understand how JBL SA550 C and Technics SU-GX70 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 JBL SA550 Classic over Technics SU-GX70
Watts into 8-ohms 90 watts vs 30 watts Delivers higher power into 8-ohms speakers
Watts into 4-ohms 150 watts vs 60 watts Delivers higher power into 4-ohms speakers
Total Harmonic Distortion (THD) 0.002% vs 1% Less Harmonic Distortion
Total Analog Inputs 3 vs 2 More options for connecting Analog sources
Coaxial Digital Inputs 2 vs 1 More options for connecting Digital sources
Base Surface Area 1565.0cm2/ 242.6inch2 vs 1711.1cm2/ 265.2inch2 takes less space in your room

Reasons to choose Technics SU-GX70 over JBL SA550 Classic
Built-in Room Correction Yes vs No Adjusts audio output to compensate for acoustic anomalies in a listening space
Wi-Fi Yes vs No High quality streaming over WiFi
Optical Digital Inputs 2 vs 1 More options for connecting Digital sources
Apple AirPlay Yes vs No Compatible with Apple Devices with AirPlay
Apple AirPlay 2 Yes vs No Compatible with Apple Devices with AirPlay 2
Built-in Chromecast Yes vs No Compatible with Chromecast Streaming
Built-in Chromecast Yes vs No Compatible with Chromecast Streaming
Height 101mm vs 126mm Easier to fit in smaller spaces

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 JBL SA550 C and Technics SU-GX70 differs from each other.

JBL SA550 C Inputs
  • Total Number of Analog Inputs: 3
  • Phono Input
  • 1 Optical Digital Input
  • 2 Coaxial Digital Input
  • USB Input:
    • USB Type-A input for software updates only
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
JBL SA550 C Back View
JBL SA550 C Back View (Click the image for the larger version)

Outputs
  • Stereo RCA Preamp Outputs
  • 3.5mm Headphone Output
Outputs
  • Stereo RCA Preamp Outputs
  • 1/4 Headphone Output
Technics SU-GX70 Back View
Technics SU-GX70 Back View (Click the image for the larger version)

What's in the Box of JBL SA550 C?

Here are the items that are included inside the box of SA550 Classic:
  • Integrated Amplifier
  • 58-inch AC power cord
  • Remote control
  • 2 -inchAAA-inch batteries
  • Quick Start Guide
  • Important Safety Instructions
  • What's in the Box of Technics SU-GX70?

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