Mono vs Stereo Audio: What's the Difference?
What mono and stereo mean, and how to switch mono on or off on any device.
Read guideMic Not Working? How to Fix It
Permissions, input device, levels and drivers – step-by-step fixes.
Read guideOne Earbud Not Working? How to Fix It
Fix balance settings, dirty mesh, pairing and broken cables.
Read guideLaptop Speakers Not Working? 9 Fixes
Wrong output, mute, drivers and enhancements on Windows and Mac.
Read guideHow to Tell If a Speaker Is Blown
What a blown speaker sounds like and four ways to test it.
Read guideHow to Test a Subwoofer
Test tones, power, connections, crossover, phase and placement.
Read guideWhy Are My Speakers Crackling?
Cables, interference, Bluetooth, clipping and PC audio fixes.
Read guideWhat Hz Is Bass? Bass Frequency Range Explained
Sub-bass, punch and warmth – which Hz does what, and how low your speakers go.
Read guideHow to Clean Earbuds Safely
Remove earwax, wash tips and clean the case without damage.
Read guideHow to Make Headphones Louder
Volume limits, cleaning, seal, Bluetooth and EQ fixes.
Read guideBest EQ Settings for Bass
Ready-made 5-band and 10-band settings for clean, deep bass.
Read guideNot sure where to start?
Run the free speaker test, headphone test or microphone test first. If something sounds wrong, pick the guide above that matches the symptom.