404 FOUNDFree Online Sample Chopper
The browser sampler that finds the loops, BPM and key in any record. No download, no DAW.
The self-digging sampler. Drop a record. It finds the loops, ranks them, cuts them clean, and lights up sixteen pads. BPM, key, and the drummer's drift already handled. You just tap.
Nothing uploads. Runs entirely on your device. Card or PayPal.
WHAT IT DOES
Drops a whole song or a stem, follows the actual beats (live drummers included), then scores every candidate bar and hands you the eight best 4-bar and 8-bar loops, plus one-shot snips, plus chops on the downbeats.
Sixteen pads, seamless seams, BPM and key on the screen. Pitch it two ways: Grid keeps the length, Tape drags the speed like the real thing. Vinyl pump, Lo-fi grit, Stripped, or Clean.
WAV per pad, a whole pack as a zip, or MKII-formatted packs for your SP-404. Every filename carries the bpm and key, restamped when you pitch. Resample your own performance into new pads.
A finder hands you a slice. A machine hands you a beat.
Auto-chop tools place cues and let you hunt. 404 FOUND does the hunting: it listens to the whole record, decides which bars loop, and cuts the seam before you ever hear it. The judgment is the product.
FREE TO DIG. $29 TO KEEP.
- Everything you can hear. Drop records, tap every loop and snip, chop, pitch, audition every character.
- Unlimited records, unlimited time.
- No account, no upload, no install.
- Export unlocked. WAV, packs, MKII packs.
- The standalone app file, yours forever. Opens in any browser, works offline, no server, no subscription.
- One key, three devices. 14-day refunds, no questions.
Character is for auditioning and sketching. Do your final color in your DAW.
BUILT AT THE LAKE, TUNED ON MISSOURI RECORDS
Made at Lake of the Ozarks by a producer who got tired of scrubbing warp markers. The beat tracker was tuned on sixties Missouri sessions with real drummers who speed up, slow down, and shuffle, because that's what records do. If it can cut a clean bar out of a cave recording, it can cut one out of your crate.
QUESTIONS
Do I need to download or install anything?
No. 404 FOUND is an online sample chopper that runs in your browser, so it works on a laptop, desktop, Chromebook or phone with nothing to install and no account. Drop in an mp3, wav or m4a and it starts digging.
Does my audio get uploaded anywhere?
No. The whole engine runs in your browser on your CPU. Nothing leaves your device, and the standalone file works with the internet off.
Do I need an SP-404?
No. It's a sampler on its own. If you have a 404 MKII, the pack export is formatted for it.
Phones?
Yes, any modern browser. Long tracks analyze slower on a phone; it tells you what it's doing.
What if it calls the tempo wrong?
It listens to the drummer instead of stamping a grid, so it's right far more than it used to be, and when confidence is low the bpm wears a question mark. Half, double, or type the bpm and it re-cuts in a second.
Pitching down sounds muddy?
Use Tape mode. It slows the loop the way a sampler does instead of stretching it, and the new bpm goes in the filename.
Refunds, devices, updates?
14 days, no questions. One key works on three devices. The web app updates itself; the standalone file is a snapshot you keep.