The settings behind the slowed + reverb sound
| Preset | Speed | Reverb | Room | Extra |
|---|---|---|---|---|
| Slowed + reverb | 85% (≈ −2.8 semitones) | 45% | 3.5 s | +3 dB bass |
| Dreamy | 80% | 60% | 5.5 s | soft low-pass at 9 kHz |
| Underwater | 82% | 50% | 4 s | heavy muffle at 1.6 kHz, +4 dB bass |
| Subtle | 92% | 25% | 2 s | — |
Most slowed + reverb edits sit between 80% and 90% speed. Below 75% voices start to sound sluggish; above 92% the effect is hard to hear. Reverb between 30% and 60% with a long room (3–6 seconds) gives the washed-out, late-night feel.
Vinyl pitch or same key?
The classic slowed sound plays the song slower like a record at the wrong speed, so the pitch drops with it: 85% speed is about 2.8 semitones lower. That deeper voice is part of the vibe.
Tick Keep the original key and the tool time-stretches instead: the song gets slower but stays in its key. Use it when you want a slower version to sing or play along with.
Make a slowed instrumental or karaoke version
Slowed instrumentals are popular for edits, study playlists and covers. Press Split vocals from this song and the song opens in our AI vocal remover. Download the instrumental, drop it back here and slow it down.
- Slowed instrumental: split → instrumental → Slowed + reverb.
- Slowed acapella: split → vocals → Dreamy preset for an ethereal vocal.
- Slowed + 8D: add 8D rotation from the slider for a song that circles your head.
Private and free
The song never leaves your device: decoding, the effect chain and the MP3 encoding all run in your browser with the Web Audio API. There's no upload, no queue, no watermark and no daily limit. Only the optional vocal split runs on our servers (your first split each day is free).
Respect copyright: slowed versions of songs you don't own are fine for personal listening, but posting them may need the rights holder's permission.
Frequently asked questions
Is this slowed and reverb maker free?
Yes. Making and downloading slowed + reverb songs is free with no sign-up, no watermark and no daily limit, because everything runs in your browser.
What speed is best for slowed and reverb?
85% is the most common setting. Try 80% for a heavier, dreamier sound and 90–92% when you want the song to stay recognisable.
Why does the voice sound deeper?
Slowing a song like a record lowers its pitch: 85% speed is about 2.8 semitones lower. Tick Keep the original key to slow it down without changing the pitch.
Can I slow down a YouTube or Spotify song?
Not by link — we don't download from YouTube or Spotify. Use an audio file you have, such as an MP3 you bought or made, or a song exported from your own project.
What file do I get?
An MP3 at 256 kbps or a 16-bit WAV, with the reverb tail included, named after your song (song-slowed-reverb.mp3).
Does it work on iPhone and Android?
Yes, in Safari and Chrome. Long songs take a few more seconds to render on a phone.
Can I make a slowed instrumental?
Yes. Press Split vocals from this song to remove the vocals in our vocal remover, then slow down the instrumental here.