For Computer (Windows, macOS)
1. Boom 3D

3D surround sound and volume boosting features.

Offers equalizer settings and sound profiles.

Available for Windows and macOS.

2. Equalizer APO

Open-source audio processing tool for Windows.

Provides advanced equalizer and volume boost settings.

Works system-wide and is free.

3. FxSound Enhancer

Improves sound quality and boosts volume.

Easy-to-use interface.

Available for Windows.

4. Letasoft Sound Booster

Can increase system volume up to 500%.

Simple and effective volume booster.

Suitable for Windows.

For Phone (Android & iOS)
1. Volume Booster GOODEV (Android)

Simple volume booster app.

Increases volume for speakers and headphones.

2. Super Loud Volume Booster (Android)

Boosts volume within safe limits.

Lightweight and easy to use.

3. Equalizer Fx: Bass Booster & Volume Booster (Android)

Equalizer and volume boosting features.

Offers bass boost and sound profiles.

4. Boom: Bass Booster & Equalizer (iOS & Android)

3D surround sound, bass and volume booster.

Powerful equalizer settings.

⚠️ Warning: Avoid excessive volume levels to protect your headphones and speakers. Download programs from trusted sources only.