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Popular Spectro Guides
Fake FLAC Detector for Mac
Find FLAC files re-encoded from MP3 or AAC — spectral analysis, automatic verdict.
Fake Lossless Checker for Mac
Detect MP3s disguised as WAV, AIFF, or FLAC before they reach your DJ export flow.
Spek Alternative for macOS
Compare Spectro vs manual spectrogram workflows and speed up large-library triage.
AudioChecker Alternative for Mac
Replace the discontinued AudioChecker tool — native macOS, batch scans, automatic verdicts.
Lossless Audio Checker for Mac
Automatic LOSSLESS, FAKE, or MEDIUM verdicts for WAV, AIFF, and FLAC — free trial for 100 files.
Audio Quality Checker for DJs
Pre-gig quality control workflow for DJs with mixed-source catalogs.
Rekordbox Audio Checker
Audit Rekordbox-ready folders before USB export and reduce risky tracks in your set.
Serato Audio Checker
Verify your Serato crates before the gig and catch fake lossless tracks before they hit the system.
Blog
Audio quality, explained.
Is Spotify Lossless Actually Lossless? What the HiFi Tier Really Delivers
Spotify's lossless tier promises CD-quality FLAC streaming. Here's what it actually delivers, how it compares to Apple Music and Tidal, and how to verify any audio file in your library.
June 4, 2026
Is Your Hi-Res Download Actually Hi-Res? Verify Qobuz, HDtracks, and Bandcamp
Qobuz, HDtracks, and Bandcamp sell 24-bit hi-res FLACs — but are they always genuine? Here's how to verify any hi-res download is actually hi-res, not an upsampled CD.
June 4, 2026
How to Detect Fake Hi-Res Audio: When Your 24-bit FLAC Is an Upsampled CD
A 24-bit/96kHz FLAC can still contain CD audio upsampled to hi-res. Here's how to spot it using spectral analysis — and what genuine hi-res looks like.
June 4, 2026
Is Tidal FLAC Really Lossless? How to Verify Your Downloads
Tidal calls it lossless — but not every file delivers. Learn how to spot fake FLACs, what spectral cutoffs reveal, and how to verify your library in seconds.
May 29, 2026
Rekordbox Audio Checker: Download to USB Workflow
A complete step-by-step workflow for Rekordbox DJs to verify audio quality before exporting to USB — from purchase to scan to CDJ-ready set.
May 22, 2026
How to Verify Your FLAC Files Are Actually Lossless
Bought FLAC from Qobuz, HDtracks, or Bandcamp? Here's how to verify the files are genuinely lossless — and what fake FLAC looks like when you check the frequency spectrum.
May 5, 2026
The Science Behind Fake Lossless Audio Detection
How does a tool know a FLAC file contains a 128 kbps MP3? The answer is in the frequency spectrum. A breakdown of the peer-reviewed research behind spectral fake lossless detection.
May 5, 2026
Lossless Audio Checker: Online vs. Offline — Which Is More Accurate?
Looking for a lossless audio checker? This guide covers what online audio checkers can and can't do — and why a native Mac app gives more complete results for batch DJ library scanning.
May 4, 2026
Why Fake FLAC Still Exists in DJ Libraries in 2026
Fake lossless audio has been a known problem for over a decade. Here's why it still exists, how it keeps entering DJ libraries, and what the distribution chain looks like from the inside.
April 30, 2026