Make music hit different
The easiest way to make slowed+reverb, nightcore and more
Settings
Audio Quality
Auto-play Preview
Auto-scroll on Upload
About Grandmataste
Lightning Fast
Process your audio files in seconds with our optimized algorithms.
Secure & Private
Your files are processed locally and never stored on our servers.
Professional Quality
Studio-grade audio processing for the perfect slow and reverb sound.
Video Creation
Create stunning MP4 videos by combining your processed audio with custom images.
Mobile Friendly
Works perfectly on all devices - desktop, tablet, and mobile.
Multiple Formats
Download your creations as high-quality MP3 audio or MP4 video files.