Your music deserves a second opinion.
Audio mastering analysis for people who care about sound quality.
Built for audiophiles who want to know the truth behind every master — dynamic range, loudness, clipping, and whether that "lossless" file is really lossless.
What DrDoctor tells you
Dynamic Range Score
DR score calculated using the DR Database methodology. Know instantly if your music has been crushed in the loudness war or preserved with care.
Loudness (LUFS)
Integrated loudness measurement following EBU R128. See how loud the master really is — and whether it will be turned down by streaming services.
Clipping & True Peak
Detect digital clipping and inter-sample peaks via 4x oversampling. Find out if your music's peaks have been chopped off.
Fake Lossless Detection
FFT spectral analysis detects sharp frequency cutoffs that reveal if a "lossless" file was actually upconverted from MP3, AAC, or OGG.
DSD/DSF Native Support
Full support for DSD64/DSD128/DSD256 files with two-stage decimation and FIR anti-aliasing filter. Analyze your SACD rips without conversion.
The verdict
DrDoctor combines all metrics into a clear mastering verdict:
- Excellent — Well mastered with great dynamics
- Good — Solid balance between loudness and dynamics
- Mediocre — Signs of over-compression
- Poor — Loudness war casualty
- Suspicious — Possible fake lossless detected
Formats supported
| Format | Extension | Source |
|---|---|---|
| WAV | .wav |
AVFoundation |
| FLAC | .flac |
AVFoundation |
| AIFF | .aif, .aiff |
AVFoundation |
| ALAC | .alac, .m4a |
AVFoundation |
| DSD | .dsf, .dff |
Custom parser + FIR decimation |
| MP3 | .mp3 |
AVFoundation |
| AAC | .aac, .m4a |
AVFoundation |