Vespertine Download
Press kit

Everything you need to write about Vespertine.

Vespertine is the free, open-source Mac player for surround and hi-res music collections. Extracted SACD 5.1 tracks, DTS CDs, DTS-HD MA, TrueHD and Atmos files share one library, with head-tracked Spatial Audio on AirPods. The signal path shows each step from file to output, with conditions and tests in GPL source anyone can audit.

Channel-for-channel output and receiver bitstream are experimental, untested on real receivers/multichannel DACs; reports wanted. SACD ISO is not supported yet. Dolby Digital Plus Atmos objects are rendered by macOS; TrueHD Atmos and DTS:X play their channel bed.

Fact sheet

NameVespertine (formerly Nocturne)
DeveloperAlex (Alexander Szeremeta), student and independent developer
PriceFree. Open source under the GPL-3.0; no account, subscription, ads or telemetry
PlatformmacOS 14.4 Sonoma or later, Apple silicon and Intel
Current version0.10.0 · signed and notarized DMG, updates itself
InstallDownload the DMG or brew install --cask szeremeta1/tap/vespertine
LinksWebsite · Source code · How to verify bit-perfect playback
Tested withFiiO K11 (every rate to 384 kHz, DoP, integer mode), AirPods Max over USB-C and Bluetooth, MacBook Pro speakers
How it's madeClaude Code and Codex wrote most of the code. Alex decided behavior, wrote acceptance tests, and measured playback on his hardware. How it's made

What it focuses on

  • Surround music in one Mac library, from extracted SACD tracks and DTS CDs to TrueHD and DD+ Atmos, with Spatial Audio on AirPods.
  • Free GPL-3.0 source anyone can read, build and change.
  • A signal path showing rate, word length, gain and channel processing. Bit-perfect conditions live in code, with tests and a verification guide.

Hi-res file analysis is also included. Zero-padding detection is exact; spectral verdicts are estimates with limits. VeraVox and Audirvana AudioScan offer analysis too. Comparison sources.

Trailer

36 seconds, 16:9, 1080p at 60 fps, with sound. Download the MP4 (22 MB). A 4K master is available on request.

Logo

Always lowercase, the crescent always in brass. Please don't recolor, stretch or re-set it. Brand guide (PDF).

The Vespertine lockup: a brass crescent and the word vespertine
Primary · SVG · PNG · on light: SVG · PNG
The stacked Vespertine lockup
Stacked · SVG · PNG · crescent alone: SVG · PNG

Key art

One image per feature, in three sizes: 2400×1350, 1600×900 and 1270×760.

Bit-perfect when the conditions are met
Bit-perfect when the conditions are met · 2400 · 1600 · 1270
Fake hi-res detection
Fake hi-res detection · 2400 · 1600 · 1270
Surround as Spatial Audio on AirPods
Surround as Spatial Audio on AirPods · 2400 · 1600 · 1270
Native DSD over DoP
Native DSD over DoP · 2400 · 1600 · 1270
Stereo and surround versions
Stereo and surround versions · 2400 · 1600 · 1270

Screenshots

The real app on the developer's own library, 2400×1500. Album art belongs to its owners.

24-bit / 192 kHz, bit-perfect on a FiiO K11
24-bit / 192 kHz, bit-perfect on a FiiO K11: Elton John, Regimental Sgt. Zippo
Albums filtered to multichannel
Albums filtered to multichannel
Extracted SACD tracks with stereo and 5.1 versions
Extracted SACD tracks with stereo and 5.1 versions
Extracted SACD 5.1 tracks as Spatial Audio on AirPods Max
Extracted SACD 5.1 tracks (Brothers in Arms, 20th Anniversary Edition) as Spatial Audio on AirPods Max
A 24/192 “remaster” that stops at 19 kHz
A 24/192 “remaster” that stops at 19 kHz (a deliberate fake: the trailer's own music, encoded to MP3 and upsampled, under a made-up band name)
DSD64 over DoP
DSD64 over DoP: Oasis, (What's the Story) Morning Glory? from its SACD
Genres
Genres
Search
Search
A smart playlist, bit-perfect on AirPods Max
A smart playlist, bit-perfect on AirPods Max

Contact

Press, questions and interview requests: press@szeremeta.org. Community questions: GitHub Discussions. Bugs and device reports: GitHub issues.