Volume booster and equalizer for Android with Xiaomi Hyper Island and Liquid Glass UI
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HyperBoost is an open-source Android utility (Android 10+, API 29+) that increases audio volume above the standard 100% cap on phone speakers, Bluetooth headphones, external speakers, and USB DACs. It features a translucent Liquid Glass interface, 5 distinct screens, and integration with Xiaomi Super Island (miui.focus.param) and Android 16+ Live Updates.
| Home | Equalizer | Devices | Settings | System |
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Android handles audio effects differently across device manufacturers and OS skins. HyperBoost includes two independent audio engines:
- Soft Mode (Session 0): Attaches Android's system
LoudnessEnhancerand 6-bandDynamicsProcessingstage directly to the global audio mixer (sessionId = 0). It introduces zero audio latency and functions across all players, including DRM-protected streams. - Audio Capture Mode (PCM DSP): Captures the audio stream via
MediaProjectionandAudioPlaybackCapture, processing 48 kHz stereo samples through a 64-bit digital multiplier, a 95 Hz Biquad low-shelf bass filter, a Mid/Side stereo widener, and a continuous soft-knee (tanh) limiter. This engine bypasses vendor mixer constraints on devices where Session 0 is locked or attenuated.
HyperBoost is developed specifically for Android. On startup, DeviceProfileDetector evaluates system properties and packages to select the best available audio and island presentation strategy:
| Device / OS Skin | Verification Status | Features & Notes |
|---|---|---|
| Xiaomi 17T Pro (HyperOS 4, Android 17 / API 37) | Tested on physical device | Full support: both audio engines, Super Island (miui.focus.param) with −10% / +10% steps, battery and autostart shortcuts. |
| Other Xiaomi / Redmi / POCO (HyperOS 1–3, MIUI 14) | Expected to work (needs verification) | Uses identical focus notification structures and Xiaomi intent endpoints. |
| Android 16+ devices (Pixel, Nothing, Motorola) | Expected to work (needs verification) | Promoted ongoing Live Updates and standard AOSP background execution policies. |
| Samsung One UI, OnePlus, OPPO, realme, vivo, Honor | Expected to work (needs verification) | Standard media notification with −10% / +10% controls and vendor background guides. If Dolby Atmos or SoundAlive limits Session 0 peaks, use Audio Capture mode. |
If you test HyperBoost on your phone, go to the System tab, tap Copy Report, and submit it in Issues to help keep this table up to date.
- Uncapped volume scale: Default scale ranges from 0% to 1000% (with clear 100%, 200%, 500% markers), and an optional Unlimited Mode unlocks up to 10,000% for very quiet media.
- Fixed −10% and +10% controls: Xiaomi Super Island, shade notifications, Glance home widget, and Quick Settings tile provide quick
−10%,+10%, andOn/Offcontrols. - Working bass, surround, and balance controls: The app inspects whether hardware
BassBoostandVirtualizerare available. If not, it routes bass and spatial balance through a 6-bandDynamicsProcessing.PreEqstage or the software Biquad/Mid-Side DSP. - Per-output memory: Automatically stores and restores independent volume levels for internal speakers, each paired Bluetooth device, wired headphones, and USB DACs.
- Zero internet access: HyperBoost does not request or include the
android.permission.INTERNETpermission.
- Capture policy (DRM): Apps with
ALLOW_CAPTURE_BY_NONE(voice calls, banking clients, certain DRM-protected video streams) cannot be recorded by Android'sAudioPlaybackCapture. Use Soft Mode (Session 0) for those applications. - HyperOS Super Island whitelist: Some global HyperOS builds restrict custom island views to whitelisted system packages. HyperBoost detects this and falls back to a persistent notification with the same
−10%and+10%actions.
- Download the latest
HyperBoost-vX.Y.Z.apkfrom GitHub Releases. - Open the file on your device and confirm installation. If Google Play Protect shows an "Unknown developer" alert, tap More details → Install anyway.
- On Xiaomi / HyperOS devices:
- In HyperBoost open Settings → Notification Settings and enable Focus Notifications / Super Island.
- In background settings set battery saver to No restrictions and allow Autostart.
To verify package integrity before installing on Linux:
sha256sum -c HyperBoost-v1.4.0.apk.sha256Requires JDK 17 and Android SDK (API 35):
# Clone the repository
git clone https://github.com/MrQuster/HyperBoost.git
cd HyperBoost
# Run unit tests and assemble Debug APK
./gradlew clean test lintDebug assembleDebug
# Assemble Release APK with R8 (output in app/build/outputs/apk/release/)
./gradlew assembleRelease -PversionName="1.4.0"Why is there no boost effect in some apps?
Certain apps (e.g. streaming with DRM protection or voice calls) block audio capture. Switch to Soft Mode (Session 0) on the home screen.
How do I turn on Xiaomi Super Island?
Go to phone Settings → Notifications & status bar → enable Focus notifications for HyperBoost. Inside the app, tap the island self-test in the System tab to confirm.
How do I disable Bluetooth Absolute Volume?
If your Bluetooth headphones reach maximum volume too early, open Developer Options in Android settings and toggle Disable Absolute Volume.
High volume amplification can overdrive speaker hardware or cause hearing fatigue over prolonged exposure. Use sensible listening levels and enable the soft-knee (tanh) limiter in Settings if you experience distortion.