Karps Refine
Get your song ready to post
Refine brings your song to Spotify and YouTube loudness, keeps the peaks under control, cleans up the bass and reduces hiss.
Free tool · no sign-up
8D Audio online
Make any song spin around your head, right in your browser. Pick the file, adjust and download as MP3 or M4A. Your song never leaves your computer.
- No sign-up
- No watermark
- Processed in your browser
Quick version in your browser
Processed in your browser. Your song is not uploaded to any server.Hear the difference
Quick version × Studio version
The first minute of “Out Of My Control” by kolaa, in three versions. The quick version is made right now, in your browser, by this tool; the Studio version was made in Karps Music.
OriginalNo effects
Quick versionMade here, in your browser · simple 8D and synthetic reverb
StudioMade in the Studio · 8D alone, with slowed or with reverb from real places
Karps Music Studio
Get access to all our effects
34 effects in 12 categories, to combine on the same song and tweak whenever you want.
Speed
- Slowed
- Ultra Slowed
- Sped Up
- Ultra Sped Up
Space
- Echo
- Reverb12 types
Pitch
- Lower
- Ultra Lower
- Higher
- Ultra Higher
Movement
- 8D
- Chorus
- Tremolo
Tone
- Bass Boost
- Lo-fi
- Radio
Phonk & Funk
- Phonk3 types
- Funk3 types
Digital
- Robot
- Bitcrusher
Ambient sounds
- Rain
- Thunder
- Forest
- Ocean
Scenes
- Another Room
- Headphones
- Car
- Bathroom
FadePro
- Fade In
- Fade Out
TransformPro
- Reverse
- Stutter
SweepPro
- Low-pass Sweep
- High-pass Sweep
Also in Karps
More than effects
Karps Radar
Find the trending songs before everyone else
Follow your artists' new releases and the most played songs in 20+ countries. Found the one? It opens in the Studio in one click.
Learn more
All guides
How to Make 8D Audio Online: Spin, Reverb and Export
Make 8D audio in your browser with real spin and reverb controls. Compare cycle speeds, export stereo MP3, and learn an honest Audacity alternative.
What Is 8D Audio? How It Works and What It Is Not
Understand what 8D audio really does: stereo motion, reverb and headphone listening. Compare it with 16D and Dolby Atmos, then make a browser edit.
Questions
Frequently asked questions
What is 8D audio?
It's a version of a song where the sound seems to spin around your head, moving from one ear to the other. Here you adjust the spin speed and the reverb, and in the Karps Music Studio you can combine 8D with other effects.
Do I need headphones?
Yes, to feel the effect. With headphones each ear gets one side and the sound seems to move around you; on speakers or a phone speaker it just switches between sides.
Can I try it before creating an account?
Yes. Choose a song, adjust the spin and the reverb, and download the result right in your browser, without signing up. When you want to go further, create a Karps Music account to work in the Studio and save your projects.
What can I do differently in the Studio?
In the Studio 8D is free too, and you can combine it with slowed or echo, save the project and return later to fine-tune it instead of starting over. With Premium, add reverb from real spaces and 25+ effects. You can hear examples in the “Hear the difference” section on this page.
Why create a Karps Music account?
To keep your music projects in one place, combine effects in the Studio, revisit your edits and download your versions as MP3 or M4A. You can also explore Radar to discover music and preview audio improvements with Refine. Sign up with Google or email and start with your own song.
Make the full version in the Studio
Free 8D, slowed, echo, reverb from real spaces and 25+ effects to combine. Start for free.
Create free account