Find out before the gig.
Half your "lossless" tracks
are actually MP3s.
Fake lossless detector · WAV · AIFF · FLAC · MP3 · macOS
Spectro tells you exactly which WAV, AIFF, and FLAC files in your library are actually compressed MP3s in disguise. Drop your Beatport or Bandcamp downloads and get an instant verdict - before you play them on a professional system.
Free for your first 25 tracks · No account required · No internet needed
$39
One-time purchase
< 1s
Per file verdict
100%
Offline & Private
44.1kHz
Full resolution
App Preview
Built for DJs
Everything you need to trust your library.
Scan your entire library at once.
Drop a folder of Beatport downloads or USB promo tracks. Spectro processes up to 100 files simultaneously and delivers an instant verdict for each one.
Nearly half of tracks downloaded from unverified sources turn out to be fake lossless - MP3s or AAC files repackaged as WAV or AIFF. Playing them on a professional PA system means lost high frequencies, digital artifacts, and a set that doesn't hit the way it should.
Spectro finds them before you play them.
Simple pricing.
Spectro
$39
one-time
Other tools charge $8–15/month.
Spectro costs less than three months of theirs — forever.
- Lifetime license
- 2 Mac license
- Free updates
- Offline · Private
- 25-track free trial
Or start with the free 25-track trial
macOS 13 Ventura or later
No subscription. No cloud. Your library stays on your Mac.
FAQ
What file formats does Spectro support?
WAV, AIFF, FLAC, and MP3. Spectro reads the actual frequency content, not just the file extension or container format.
How does it detect fake lossless files?
Spectro runs a full FFT spectral analysis on each file and measures where the frequency content actually ends. A genuine lossless file has energy up to 20–22kHz. A fake lossless - an MP3 or AAC re-encoded as WAV - shows a hard cutoff, typically around 16–20kHz.
Will it work with Beatport and Bandcamp downloads?
Yes. Spectro processes files from any source - WAV, AIFF, FLAC, and MP3.
Does it upload my files anywhere?
No. Spectro runs entirely on your Mac. Nothing is uploaded, no account is needed, and no internet connection is required for analysis.
What macOS version is required?
macOS 13 Ventura or later. Optimized for Apple Silicon and Intel Macs.
How does the free trial work?
Spectro is free for your first 25 files - no time limit, no account required. Download and try it on your own tracks before buying.
What happens after I buy?
You receive a license key by email. Enter it in the app to unlock unlimited scans with a 2 Mac license.