Support Overview / Headphones / Gaming / JBL Quantum 300
JBL Quantum 300

JBL Quantum 300

Hybrid wired over-ear PC gaming headset with flip-up mic

Sold from 2020 until now

Getting started with your JBL Quantum 300

Getting started with your JBL Quantum 300

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Product Specifications

Weight (g)
245
Driver sensitivity at 1kHz/1mW (dB)
100 dB SPL @1 kHz / 1mW
Dynamic frequency response range (Hz)
20 Hz - 20 kHz
Impedance (ohms)
32
Audio Cable Length (ft)
3.9
Audio Cable Length (m)
1.2
Ear Cup Depth (cm)
2.7
Ear Cup Depth (in)
1.1
Ear Cup External Height (cm)
9.9
Ear Cup External Height (in)
3.9
Ear Cup External Width (cm)
8.8
Ear Cup External Width (in)
3.5
Ear Cup Internal Height (cm)
5.8
Ear Cup Internal Height (in)
2.3
Ear Cup Internal Width (cm)
4.9
Ear Cup Internal Width (in)
1.9
3.5 mm audio cable Input
Yes
Built-in Microphone
Yes
Fabric headband
Yes

Sound is Survival

Step up your game with superior audio. JBL Quantum 300 wired headset creates a new level of immersion thanks to JBL QuantumSOUND Signature and accurate audio positioning. JBL QuantumSURROUND™ generates a realistic soundscape that drops you in the middle of the action, gives you an edge, and maximizes your performance on your PC. Designed for durability, the lightweight headband and memory-foam ear cushions keep you comfortable. A flip-up, voice focus boom mic keeps the communication flowing with both allies and enemies.

Through advanced algorithms and the addition of overhead audio, JBL QuantumSURROUND™ powered by the JBL QuantumENGINE PC software creates an incredibly realistic spatial soundstage for cinematic levels of immersion and a true audio edge over the competition.
From the tiniest footsteps to the loudest explosions. JBL QuantumSOUND Signature makes every scene epic and every gamer more competitive. The 50mm neodymium drivers deliver a sound curve designed specifically for gaming. Immerse yourself in the most realistic soundscape for a competitive advantage in any battle.
The lightweight headband and memory foam ear cushions were designed for even the longest gaming sessions. Detachable ear cushions make the headset easy to clean.
JBL Quantum 300 headset lets you rally the troops and opponents with clarity. The flip-up, voice focus directional boom mic enables crystal clear communications with both allies and enemies.
The JBL Quantum 300 headset is compatible via 3.5mm jack with PC, PlayStation™*, Xbox™**, Nintendo Switch™, Mobile, Mac and VR. You can also use 3.5mm jack to USB converter cable to use the headset via USB on PC, PlayStation and Mac. The features powered by JBL QuantumENGINE (JBL QuantumSURROUND, RGB, EQ, Microphone settings etc.) are only available on PC. Check the connectivity guide for compatibility. *Compatible with PlayStation (PS5 and PS4) **Compatible with Xbox (Xbox Series X S and One)
JBL's unique JBL QuantumENGINE PC software powers the immersive surround sound. Select your preferred surround sound settings and personalize your JBL Quantum 300 gaming headset from a user-friendly dashboard, creating separate profiles. You can also adjust the equalizer or choose from 6 presets.

FAQs & How-Tos

16 results
  • Game-Chat Balance Support
    For JBL Quantum 100/200/300 models, they do not offer Game-Chat audio dial function.
    To get the Game-Chat dial feature, you need JBL Quantum 400, and up, then you can adjust game-chat balance by rotating the dial-up and down.

    For models that support Game-Chat dial, when you rotate the dial, you will feel a notch that indicates 50% game and 50% chat. Or you can see the status on the top bar of the JBL QuantumENGINE.
  • Hearing the difference between Stereo and Surround Sound
    Make sure your headset is configured correctly in your Windows settings. The setting should normally be JBL Quantum *Game* to experience QuantumSURROUND. 
    Please check out this video to assist you further!
     
    https://www.youtube.com/watch?v=LA80RmBrbYg
  • How do I clean my JBL Quantum 910 Wireless headset?
    You can clean it by wiping it gently with a damp cloth. Take extra care not to let water leak into the speaker chamber, as it will damage the speaker drivers.
  • How to set up your microphone
    Ensure that only one voice chat application is in use while in-game. Be sure you hear a click when the microphone is flipped down. The microphone will only function when it is flipped down fully. If you see a red LED on the microphone, it is muted.

    Check that the PC is using the correct recording device.

    1. Go to Control Panel

    2. Select  Sound 

    3 Select  Recording

    4. Make sure to select the proper recording device.
    1. Right-click on it Quantum headset.
    2. Now select "Set Default Device" or "Select Default Communication Device"
    5. Check the microphone levels by right-click on your Quantum headset.

    6. Go to Properties

    7. Choose Levels and adjust accordingly
  • How to set up your microphone

    Ensure that only one voice chat application is in use while in-game. Be sure you hear a click when the microphone is flipped down. The microphone will only function when it is flipped down fully. If you see a red LED on the microphone, it is muted.
    FLIP DOWN.png


    How to check your PC settings for the correct recording device
    1. Go to Control Panel
    Control panel.png
    2. Select Hardware and Sound
    Step 2.PNG
    3. Click on Sound
    Step 3.PNG
    3 Select  Recording
    Recording tap.jpg

    4. Make sure to select the proper recording device.

    1. Right-click on it Quantum headset.

      Set default communication device.jpg

    2. Now select "Set Default Device" or Select "Default Communication Device"

      Set default communication device 2.jpg

    5. Check the microphone levels by right-click on your Quantum headset. Then click on Properties
    Properties.jpg

    6. Choose Levels.
    Levels 1.jpg

    7. Adjust accordingly.
    Levels 2.jpg  

    Please also make sure the volume control on the headset is turned up. Rotate the volume wheel on your headset to increase the volume.
    Check that your headset's Game-Chat balance dial and ensure that the balance is correct, you might refer to the screenshot below from the QuantumEngine PC software.
    Volume issue Q800 - Part3.png

    If you still cannot hear the game or music audio, or if the volume is still very low, check if the TalkThrough is activated via the QuantumEngine software.
    Volume issue Q800 - Part4.png

    Finally, you can also do a short press on the Smart Ambient button on the headset (if your headset, has this feature)
    Volume issue Q800 - Part5.png

  • JBL QUANTUM ENGINE: Software Update Release Notes

    JBL QUANTUM ENGINE
    Software Update Release Notes

    ------------------------------------------------------------------------

    Version:  2.0.5
    Release Media: Via QuantumENGINE
    Release Date: April 4th, 2025

    What’s New

    1. Improved ’QuantumENGINE window always getting maximized’ issue.
    2. Fixed ’mic always occupied’ issue.
    3. Fixed bugs in our EQ presets.
    4. Fixed battery indicator issues

    ------------------------------------------------------------------------

    Version:  2.0.2
    Release Media: Via QuantumENGINE
    Release Date: January 25th, 2025

    What’s New

    1. Improved positional sound and immersion
    2. Powerful game centric design for EQ
    3. Streamlined and intuitive user interface
    4. AI-powered game centric design for microphone

    ------------------------------------------------------------------------

    Version:  1.19.0.2025
    Release Media: Via QuantumENGINE
    Release Date: June 20, 2024

    What’s New

    1. Add support for Quantum 50C & Quantum 360 Wireless
    2. Add max volume indicator for Quantum Stream Wireless
    3. UI improvements for better user experience

    ------------------------------------------------------------------------

    Version:  1.17.0.1950
    Release Media: Via QuantumENGINE
    Release Date: November 21, 2023

    What’s New

    1. Add product support for Quantum Stream Talk
    2. Add EQ store feature for Quantum 350 & Quantum 360 P/ X
    3. Firmware update stability improvement for Quantum 810
    4. UI improvements for better user experience

    ------------------------------------------------------------------------

    Version:  1.6.0.1053
    Release Media: Via QuantumENGINE
    Release Date: January 21, 2021

    What’s New

    1. Add welcome feature
    2. Add surround mode feature
    3. ANC/TT toggle has been implemented
    4. Sidetone setting has been turned off by default
    5. QuantumSURROUND/QuantumSPHERE quality and performance improvement
    6. Quantum 300 mic gain improvement
    7. Quantum 800 firmware update stability improvement
    8. Bugs fixed

     


     

  • JBL Quantum ONE and Quantum TWS: How do I clean my headset?
    You can clean it by wiping it gently with a damp cloth. Take extra care not to let water leak into the speaker chamber, as it will damage the speaker drivers.
  • Microphone Sound or Distortion Issues
    Make sure both the QuantumENGINE software and the headset's firmware is updated to the most recent version, and that the microphone is plugged all the way in.
  • Non-removable microphone feature
    We've intentionally designed the flip-up boom mic to stay affixed to the headset. We know from experience that losing or breaking the detachable mic is never fun. Therefore, we designed the mic to fold neatly into the headset - this design also allows the mic to automatically mute when elevated. If you're wanting a detachable mic, please check out the Quantum 100 or the Quantum ONE.
  • No sound in my Quantum headphones

    Make sure the headset volume control is turned up. Rotate the volume wheel on your headset to increase the volume. If you're using the USB dongle, check that the correct playback device is selected under Control Panel > Sound > Playback. Select the proper playback device, right-click, and select "Set as Default Device". Check the computer volume levels and make sure it is not muted or turned all the way down.

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Images & Videos

  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Hero
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Front
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Back
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 1
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 2
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 4
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 5
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 6
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 7
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 8
  • JBL Quantum 300 - Black - Hybrid wired over-ear PC gaming headset with flip-up mic - Detailshot 15

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