The Nothing Ear (3) delivers excellent clarity and bass, but when it suddenly starts sounding hollow, thin, or just off, it's rarely a hardware issue. More often, it's a setting in the Nothing X app, a Bluetooth codec mismatch, or a misconfigured device profile. Here are the most effective fixes, starting with the quickest to check.
Check the EQ in the Nothing X App
Open the Nothing X app, tap your Ear (3), and head to the EQ section. If the sliders are heavily customized or set to a preset you don't remember, that's the culprit. Tap Reset or switch back to Balanced to disable any accidental customization.
This is the single most common cause of distorted or unbalanced sound. The stem pinch gestures can bump the EQ without you noticing, especially if you adjust the volume with the controls.
Retake Your Personal Sound Profile Test
The Nothing Ear (3) uses a Personal Sound Profile to tailor the audio to your hearing. If you set this up in a noisy environment or after a firmware update (a known issue), the calibration will be off.
Go to the Nothing X app, tap your earbuds, then Personal Sound Profile, and select Retake Test. Sit in a quiet room with the earbuds sealed snugly in your ears. The test takes about a minute to run and usually restores clarity if a bad calibration was the issue.
After a firmware update, the profile often needs to be retaken. Make this part of your post-update routine to avoid sudden sound quality drops.
Check for Nothing X App Crashes or Source Issues
If the Nothing X app is crashing, especially on iOS 18.4 or later, you won't be able to adjust any sound settings at all. Nothing has acknowledged this specific bug, and a fix usually comes through an app update.
Check the App Store for a pending update. If the app is already crashing, uninstall it, restart your phone, and reinstall it from the store. While you are at it, check your streaming app, since low-bitrate streaming can make even the best earbuds sound muddy.
Make Sure Your Phone Uses LDAC or LHDC 5.0
The Nothing Ear (3) supports LDAC and LHDC 5.0, which provide hi-res audio over Bluetooth. If your Android phone defaults to SBC or AAC, you are leaving a lot of detail on the table.
Open your phone's Developer Options (tap Build Number seven times in About Phone if you don't see it). Scroll down to Bluetooth Audio Codec and select LDAC or LHDC 5.0. On iPhone, you are limited to AAC, which is solid but won't match the hi-res performance Android users get.
Check Your PC or Macs Bluetooth Profile
This is a universal Bluetooth headache. Windows and Mac often switch headphones into Handsfree (HFP) mode for calls, which drops audio quality to mono.
On Windows, open Settings > System > Sound, find the Ear (3) in the output list, and make sure it shows as Headphones (Stereo), not Headset (HFP). If it's stuck, disconnect from any call apps (Teams, Zoom) and manually select the Stereo output. On Mac, open Sound Settings and ensure the input is set to your Mac's internal mic to prevent the earbuds from switching to HFP mode.
Improve the Seal and the Bass
The Nothing Ear (3) comes with multiple ear tip sizes. If the seal isn't airtight, the ANC can't create a proper noise-canceling environment, and the bass response suffers significantly.
Try the largest tips that fit comfortably in your ear canal. A good seal is critical for both ANC and sound quality. You can test this in the Nothing X app under Ear Tip Fit Test.
Reset the Earbuds Completely
If the sound is still off after checking everything else, a full factory reset clears any corrupted state. Place both earbuds in the charging case and keep the lid open.
Press and hold the button on the case for 10 seconds until the LED flashes red. This unpairs them from your phone and wipes the internal state. You will need to set them up in the Nothing X app from scratch, including your Personal Sound Profile.
Update the Firmware
Nothing pushes firmware updates that specifically target audio processing and ANC stability. Open the Nothing X app, tap your Ear (3), then navigate to Settings > Firmware Update.
If there is an update, install it while the case has plenty of charge (over 50%). After the update completes, remember to retake your Personal Sound Profile test, since it is a known issue that the update can reset the calibration.
Regroup the Touch Controls
The stem squeeze gestures on the Nothing Ear (3) control playback, volume, and noise modes. If your controls are misconfigured, you might accidentally trigger features that mess with the sound, like switching to Transparency mode or bumping the EQ.
Open the Nothing X app, tap Gestures, and review the settings for each squeeze (single, double, triple, and hold). Resetting them to the defaults is a safe bet. You can also disable the volume swipe gesture entirely if you find yourself accidentally lowering the volume.
