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 - Hero

JBL Quantum 300

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.

Product Specifications

General Specifications

Weight (g) 245

Audio Specifications

Driver sensitivity at 1kHz/1mW (dB) 100 dB SPL @1 kHz / 1mW
Dynamic frequency response range (Hz) 20 Hz - 20 kHz
Impedance (ohms) 32

Dimension Specifications

Ear Cup External Height (in) 3.9
Ear Cup External Width (in) 3.5
Ear Cup Internal Height (in) 2.3
Ear Cup Internal Width (in) 1.9
Ear Cup Depth (in) 1.1
Ear Cup External Height (cm) 9.9
Ear Cup External Width (cm) 8.8
Ear Cup Internal Height (cm) 5.8
Ear Cup Internal Width (cm) 4.9
Ear Cup Depth (cm) 2.7
Audio Cable Length (ft) 3.9
Audio Cable Length (m) 1.2
Please consult the documents for in-depth specs

Documents & Downloads

Videos

What’s in the Box

  • 1 x JBL Quantum 300 headset
  • 1 x USB audio adapter
  • 1 x Windshield foam for boom microphone
  • 1 x Quick Start Guide
  • 1 x Warranty card
  • 1 x Safety Sheet
JBL Quantum 300 - What's in the Box

FAQs & How-Tos

PlayStation Information
The compatibility for JBL Quantum models on PlayStation 5 is the same as it is for PlayStation 4 models. All JBL Quantum headset models work through 3.5mm audio jack (aux) connected to the PlayStation controller. USB models will also work on PlayStation. In addition, the wireless models works wirelessly when connected to the 2.4GHz USB dongle.Please note: JBL QuantumENGINE is only available on PC. Custom lighting can be set up on PC, and will carry over when connected with USB cable or 2.4GHz USB dongle. 
Which products are supported by the JBL QuantumENGINE software?
JBL Quantum 300, 350, 400, 600, 610, 800, 810 ONE, TWS and Stream are working with the QuantumENGINE
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.
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.
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.How to check your PC settings for the correct recording device1. Go to Control Panel2. Select Hardware and Sound3. Click on Sound3 Select  Recording4. Make sure to select the proper recording device. Right-click on it Quantum headset. Now select "Set Default Device" or Select "Default Communication Device" 5. Check the microphone levels by right-click on your Quantum headset. Then click on Properties6. Choose Levels.7. Adjust accordingly.  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.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.Finally, you can also do a short press on the Smart Ambient button on the headset (if your headset, has this feature)
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.
Quantum Engine: Software Update Release Notes
QUANTUM ENGINE Software Update Release Notes Version 1.6.0.1053Release Date: 1/21/21  Welcome feature has been implemented. Surround Modes feature has been implemented. ANC/TT toggle has been implemented. The sidetone has been turned off by default for all models to avoid confusion. QuantumSURROUND/QuantumSPHERE quality & performance have been improved. Quantum 300 Mic Gain has been improved. Quantum 800 FW update reliability has been improved. Minor Bugs Fixed     
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.
Xbox Information
 All JBL Quantum headset models work only through 3.5mm audio jack (aux) connected to the Xbox controller. You cannot connect to any Xbox Series console via Bluetooth. Please note: JBL QuantumENGINE is only available on PC.  
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. Right-click on it Quantum headset.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
What can you do with JBL QuantumENGINE software?
You can adjust equalizer, RGB LED effects, change microphone settings and update the headset's firmware.
Why are my headphones shown as “speakers” on Windows?
The “Speaker” mode allows the JBL QuantumENGINE to receive more than two channels of audio. It also prevents some applications from adding extra signal processing intended for other headphones, which would negatively impact the performance of the JBL QuantumSURROUND or JBL QuantumSPHERE 360 technology.
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
Supported Platforms
The JBL Quantum 300 headset is compatible with PC, PlayStation, Xbox, Nintendo Switch, Mobile, Mac and VR.You can also use the included USB dongle on PC, PlayStation and Mac.

QuantumENGINE

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