BLACKFRIDAY10
Until Nov 30
Check your stick, before the CDJ does.
Prepare. Play. Done. USB-Check checks your stick before the gig and creates your tracklist afterwards.
2.0The app recognizes it automatically.
You decide what gets checked against.
All green, you're good to go.
of all software-side failure causes detected before your stick leaves the house.
Chapter 1
Check
Finds what makes your stick fail on the CDJ.
2.0per player
applies to all players
Not just whether the stick is readable — but whether every single track plays at the club.
FAT32, exFAT or HFS+, MBR or GUID, depending on the player. The most common reason a stick isn't recognized at all.
Device Library and OneLibrary are cross-checked, plus playlists, analysis files, and entries pointing to missing files.
Codec, sample rate and bit depth from the header, then decoded as a sample or in full.
Path length and folder depth, special characters and non-Latin scripts in names, temporary macOS files, very large files and libraries.
Reported vs. actual capacity and interrupted exports.
Stick view
Shows what's on your stick. No rekordbox needed.
Every playlist, plus cover art, waveform and cue points. And one click lets you listen in.
2.0/Contents/Yeröm/Generation/Generation (Original Mix).mp3Label, year, format, comment.
Hot cues and memory cues.
Listen straight from the stick.
Comparison
Shows what's different between two sticks.
Main stick and backup, side by side. You see what's missing right away. Long before the club.
2.0Chapter 2
Tracklist
Turns the history of your gig into a tracklist.
Or from a playlist file exported by rekordbox. Sort it, copy it, save it. Ready for any post.
2.0Different players, different limits.
USB-Check knows them all.
no FLAC, no ALAC
No FLAC or ALAC. The stick has to be FAT-formatted.
no FLAC, no ALAC
Reads HFS+, but not exFAT.
FLAC & ALAC up to 96 kHz
FLAC and ALAC from this model on. exFAT is still not supported.
FLAC & ALAC up to 48 kHz
Reads FAT, FAT32 and HFS+, but not exFAT.
FLAC & ALAC up to 96 kHz
Reads FAT32, HFS+ and, with current firmware, exFAT. When in doubt, use FAT32.
FLAC & ALAC · OneLibrary
Reads exFAT, but only OneLibrary. The stick needs an export from rekordbox 7.2.11 or newer.
FLAC & ALAC · OneLibrary
The compact sibling of the CDJ-3000X: exFAT yes, but OneLibrary only.
Nothing on your stick is ever changed.
Your data stays on your Mac.
The app speaks both languages.
Unchanged sticks show the last result right away.
Version, license and all checks at a glance.
Peace of mind for every gig
* incl. or plus tax, depending on your country
Secure payment via Paddle · 14-day refund
No — that's exactly what USB-Check is for. The app checks everything a CDJ checks when reading the stick, just beforehand and comfortably on your Mac.
Currently supported models: CDJ-2000, CDJ-2000nexus, CDJ-2000NXS2, XDJ-1000MK2, CDJ-3000, CDJ-3000X, CDJ-1500X.
No. USB-Check only reads. Nothing on your stick is ever changed.
No. USB-Check specifically checks the exports rekordbox writes to your USB stick. If you use different software, there's nothing for USB-Check to check.
The quick check takes 1–3 minutes, the standard check 5–10 minutes — depending on the size and quality of your stick.
Yes. We've put a lot of time into developing and verifying the check mechanisms. If your USB stick is recognized by your Mac, you can rule out a hardware defect. USB-Check handles the rest. What can't be checked: the firmware version of the CDJ at the club, loose connections and faulty USB ports, and the lifespan of your USB stick.
Yes. After the one-time activation, the app runs entirely locally.
USB-Check shows you a banner as soon as a new version is available. You can then download and install the update.
No. The app currently works exclusively on macOS. Signed and verified by Apple. However, you can sign up for our waitlist, and we'll notify you as soon as Windows is supported.
If nothing has changed on the stick since the last check, it won't be checked again. You're taken straight to the results of the last check, saving valuable time. Perfect if you want to check multiple sticks.
Yes. You can deactivate the license yourself in the app on the old Mac, then activate it on the new one — done.
Yes. Payment is handled by Paddle, an established payment provider that also takes care of taxes and invoicing. Your payment details never touch our own servers.
Yes. Right after purchase, Paddle automatically emails you an invoice — handy if you're a DJ writing off expenses.
Yes. Within 14 days of purchase you can request a refund directly through Paddle — just use the link in your purchase confirmation, no ifs or buts.