pre-gig quality control
Audio Quality Checker for DJs
DJs collect tracks from Beatport, promos, Soundcloud rips, and USB copies — every source has different quality standards. Spectro is your final quality gate before the performance: scan the set, flag the risk, only take clean files to the booth.
In short
The real problem isn't having bad tracks — it's not knowing which ones they are. Spectro scans your entire set folder and returns a verdict per track so you can fix the risky files before they're in your USB.
Free for your first 100 tracks. Upgrade only if it saves your library.
Who this is for
- - Touring and club DJs with libraries built from multiple sources over years.
- - Open-format DJs who receive promos and Soundcloud rips they didn't download themselves.
- - Artists preparing for high-pressure sets where a bad track isn't an option.
- - DJs who've had playback issues at the club and want to rule out audio quality as the cause.
What Spectro does
- - Fast verdicts for large folders and playlists.
- - Filter by FAKE, MEDIUM, and LOSSLESS to prioritize fixes.
- - Finder tags to spot risky files outside the app.
- - Clear cutoff diagnostics for faster replacement decisions.
How to check your files in under 2 minutes
- 1. Run Spectro on the tracks for your next set.
- 2. Use filters to review FAKE and MEDIUM files first.
- 3. Replace risky tracks from trusted sources.
- 4. Export only verified crates to your performance workflow.
The mixed-source library problem
A DJ library built over years accumulates tracks from dozens of sources: store downloads, label promos, Bandcamp purchases, USB copies from friends, old rips from before streaming existed. Each source has different quality practices — and some stores have shipped WAV files that were silently transcoded from MP3.
A fake lossless file looks identical in Rekordbox, Serato, or Traktor. The filename says WAV. The metadata says WAV. It plays without errors. The quality difference only shows up on a professional sound system at high volume — exactly when you can't do anything about it.
Spectro closes that gap before the gig. You scan, you see the verdicts, you replace the risky tracks. The whole process takes minutes for a typical set folder.
Frequently asked questions
How long does it take to scan a set folder?
Spectro processes files in parallel. A typical set of 50–100 tracks takes under a minute on modern Apple Silicon hardware. Larger libraries of several hundred tracks usually complete in 2–5 minutes.
What formats does Spectro check?
WAV, AIFF, FLAC, and MP3. All common DJ formats are supported. Spectro checks the actual spectral content, not just the metadata.
What should I do with MEDIUM verdict tracks?
MEDIUM means the file is likely a high-quality lossy encode (256–320 kbps) in a lossless container. It's not ideal but it's not a crisis. Flag it, decide if the track is important enough to replace from a trusted source, and move on.
Does this work with Rekordbox, Serato, and Traktor libraries?
Spectro works on the files directly, independent of your DJ software. Scan the folder before importing, or scan an existing library folder. Spectro writes Finder tags so risky tracks are visible in any workflow.