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 - EPOS GSX 300 USB Gaming Amplifier with EPOS Surround Sound - Black (1000201)

EPOS GSX 300 USB Gaming Amplifier with EPOS Surround Sound - Black (1000201)

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Advanced audio control, Customizable smart button for quick mode switch, Customizable 7.1 surround sound with EPOS Gaming Suite, Synchronized with Windows 10® sound, Compatible with PC

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EAN 5714708000020
MPN 1000201

The gamer seeking enhanced audio performance instead of relying on their PC on-board sound will find excellent value in the GSX 300 external sound card. Paired with a gaming headset, the GSX 300 together with the EPOS Gaming Suite delivers digital sound processing and customizable 7.1 EPOS Surround Sound. An LED ring around the volume dial illuminates blue for 2.0 and red for 7.1 sound mode.

The Features of EPOS | Sennheiser GSX 300 External Sound Card at a Glance:

  • Advanced audio control
  • Customizable smart button for quick mode switch
  • Customizable 7.1 surround sound with EPOS Gaming Suite
  • Synchronized with Windows 10® sound
  • Connector plugs
    3.5 mm headset socket
    3.5 mm microphone socket
    Micro USB
  • Compatible with PC
  • 2 years warranty

Level up your game audio

Designed for the gamer seeking enhanced performance with their gaming headset, the GSX 300 external sound card boosts your audio experience to new levels. A simple to use, well-engineered addition to your gamer arsenal, instead of relying on your PC on-board sound, this is the must-have audio upgrade for your gaming setup.

The proprietary EPOS Gaming Suite for Windows® 10 adds audio refinement controls, customization of 7.1 surround sound and digital noise cancellation to your game. A volume dial allows quick, easy control while gaming and a smart button toggles between surround and stereo sound or between profile presets. An LED ring around the volume dial illuminates blue for 2.0 and red for 7.1 sound mode. Enjoy enhanced game audio and crisp team communication with this excellent value-for-money, external sound card and let the Power of Audio take you to new dimensions.


How do I get the most out of my new GSX 300 external soundcard?
We suggest you download the EPOS Software Suite from The EPOS Software Suite turns on 7.1 Surround Sound, allows you to create different audio profiles depending on your needs, and also allows you to control background noise.

What does the Smart button do?
You can select what it does from within the EPOS Software Suite. As of today, you can select the functionality of switching between your audio profiles or switching between Stereo and Surround sound.

Does the GSX 300 work with consoles? The soundcard was made for PC and requires the EPOS Software Suite to have all features activated. It will however work with most USB-compliant devices such as PS4 or Nintendo Switch (docked).

Will the GSX 300 improve my audio quality?
It all depends on your existing soundcard. If you don’t have a soundcard today, you might get quite a nice up-grade for audio quality.

I had 24-bit audio before installing the software suite, what happened?
The EPOS Software Suite and its 7.1 processing only support 16-bit audio today. We are working on an upgrade and hope to support Hi-Res 7.1 processing soon.

My GSX 300 isn’t playing loud enough with my headset.
The GSX 300 external soundcard was made to provide a good loudness for headsets such as the GSP 300, GSP 500 and GSP 600. If you use other headsets, please make sure that the impedance (resistance) of the headset is around 50 ohms or less. Having higher impedance will impact loudness of the audio.
We also suggest that you check that volume is turned all the way up on the volume control on your headset.

EPOS | Sennheiser GSX 300 External Sound Card Specifications:

USB StandardUSB 2.0
Total Harmonic Distortion < 0.01%
Cable Length1200mm
Connector Plugs3.5mm headset socket
3.5mm microphone socket
Micro USB
Warranty2 years
Main Audio Sample Rate24 bit 96kHz
7.1 @ 16 bit 48kHz with EPOS Gaming Suite
Recommended Headphone Impedance25 - 75 Ω
Dimension of product PackagingL x W x H
168mm x 144mm x 57mm
Package Weight309g
Including complete product and packaging
Dimension of Master CartonL x W x H
350mm x 310mm x 310mm
Units in Distributor Master Carton20
Box ContentsUSB cable
Quick start guide
Safety guide
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