Fidelia — Audiophile Player
macOS / Musique
Fidelia is the audiophile music player for Mac. It plays your music the way it was recorded — no compression, no quality loss, no compromise. Your library, your order, nothing deciding what comes next but you.
YOUR NETWORK, YOUR LIBRARY
Fidelia speaks Lyrion (Logitech Media Server): the library on your server sits in the sidebar beside the files on your Mac — one search, one wall, one player. Browsing it is free.
It plays TO your system, too. Any UPnP/DLNA streamer becomes an output — WiiM, Bluesound, Linn, Naim, Eversolo, Denon, HQPlayer — chosen from the same menu as your USB DAC, fed bit-perfect original bytes, truly gapless.
And it doesn't make you choose between the network and your signal path. Leave bit-perfect off and the whole chain runs first — HeadSpace, the dither, the resampler, your Audio Unit slots — then streams the result. Most network players hand the file to the box and stop there.
One system, sounding its best. Multi-zone sync is deliberately not attempted — this is a player for the room you're in.
THREE MASTERING-GRADE PROCESSORS, BUILT IN
Engineers pay hundreds for these as plugins.
HeadSpace — headphones are unnatural: your left ear never hears the right speaker the way it would in a room. HeadSpace corrects that with frequency-dependent crossfeed modeled on real head acoustics. A soundstage like speakers in a room, not two drivers against your ears.
Pro Dither — when audio moves between bit depths, dithering decides whether the noise floor vanishes or turns audible. A 9th-order psychoacoustic noise shaper tuned to ISO 226 equal-loudness contours — the approach licensed into Pro Tools and Logic. The noise floor drops below hearing.
Reference Sample Rate Conversion — linear-phase and minimum-phase engines, the same found in professional mastering suites, with five quality presets.
BIT-PERFECT & EXCLUSIVE MODE
Source bits go straight to your DAC — no processing, no conversion. Exclusive mode locks the device to Fidelia, bypassing the OS mixer entirely. The same behavior as dedicated audiophile hardware.
NATIVE DSD
DSF and DFF, DSD64 through DSD512, decoded in real time, gaplessly, with no conversion. For a DAC that decodes DSD itself, bit-perfect DoP sends the stream through untouched — enabled per device and confirmed with a test tone, so it only engages where it works.
INTERNET RADIO
Thousands of stations, or add any by URL — living in your library next to the music you own, running the same reference engine. Fidelia grades each stream's real quality honestly: no lossy feed dressed up as hi-fi. HLS, Opus and Vorbis play natively.
THREE AUDIO UNIT SLOTS
Load any Audio Unit — EQ, reverb, compression, spatial. Open plugin GUIs without leaving Fidelia, and every setting returns exactly as you left it.
BUILT FOR LARGE LIBRARIES
Album art fills itself in — the covers on screen first, then the rest quietly in the background, exact matches only, because a wrong cover is worse than a missing one. Every playlist remembers its own sort. Duplicate recordings resolve to the best copy you own.
ALSO
• Gapless rebuilt from the ground up — no gaps or clicks, even across sample rates and DSD
• Multi-channel routing up to 128 channels
• Conversion to AIFF, WAV, FLAC, Apple Lossless, AAC, CAF
• Monkey's Audio (APE) import to Apple Lossless
• Music.app library sync
• Scalable player — 5 sizes plus a scale control to 200%
FORMATS
Lossless: WAV, AIFF, FLAC, Apple Lossless, CAF
DSD: DSF, DFF — native, DSD64 to DSD512, bit-perfect DoP
Lossy: MP3, AAC, OGG Vorbis, Opus
Also: AC3, Sound Designer II, AU/SND, Wave64
PRICING — NO SUBSCRIPTION
Free to try for 14 days, the full app, no limits. Then a one-time unlock for Fidelia. Network playback — Lyrion libraries and UPnP streamers — is a separate one-time unlock; browsing your server is always free, so you see your whole library working before you decide.
Fidelia Remote, the iOS companion, is free.
Quoi de neuf dans la dernière version ?
Fidelia plays to your network.
Your Lyrion (Logitech Media Server) library now appears in the sidebar next to your own files — browse it, search it, see its artwork. That part is free.
And your streamer becomes an output. Pick a WiiM, Bluesound, Linn, Naim, Eversolo, Denon or HQPlayer from the same menu as your DAC, and Fidelia sends it the original bits, gaplessly — or the full signal path if you'd rather: HeadSpace, dither, sample-rate conversion and your Audio Unit slots all run before the audio leaves the Mac. A network player that still sounds like Fidelia.
Browsing your server is free. Playing to a network endpoint is a separate one-time unlock — no subscription, here or anywhere else in Fidelia.
All your music, in one library.
Fidelia has always played your imported files and your Music.app library alike. Now it stops treating them as two places.
The Library is a single view of everything you own — one wall, one table, one search. Your sources don't disappear; they become filters. Stay in Library to see all of it, or click Music in the sidebar to see only that. A Source column, sortable like any other, tells you where a track came from, and an album's sleeve names the sources behind it. (Music.app access stays yours to grant, in Settings.)
When the same recording exists in more than one place, Fidelia shows it once and keeps the better copy — lossless over lossy, higher resolution over lower. The album's fidelity light marks the records that have alternates; click it to see every version, ranked, with the chosen one marked. Local copies that are byte-for-byte identical can go to the Trash from there — identity proven by reading the files rather than trusting their names, and recoverable, because it's the Trash. Music.app tracks appear for reference and stay untouched. And if the copy Fidelia picked isn't available the moment you press play, it falls back to the next best one without saying a word.
Missing covers fill themselves in. Fidelia looks up album art online — the covers on your screen first, then the rest of the library quietly in the background, resuming where it left off at each launch. It accepts only an exact artist-and-album match, because a wrong cover is worse than a missing one, and it remembers the dead ends so it never asks twice. On by default; Settings ▸ General ▸ Library if you'd rather it didn't.
The library table remembers more, too. Every playlist — and the Library itself — keeps its own sort, and that sort now survives a trip out to the Album Wall and back. Track and disc numbers are there as columns when you want them. And the count, time, and size along the bottom describe what you're actually looking at.
Fidelia also notices when your files change underneath it. Edits you make in Music.app appear while Fidelia stays open. And if you replace a file in place — re-encode an album to ALAC and drop it over the AAC originals — Fidelia reads it again, so the format and resolution catch up on their own. Nothing is re-imported: your playlists, your play counts, and anything you typed by hand stay exactly as they were.
Beneath that, the quieter work. Fidelia no longer waits on macOS's window-restoration service, which under system load could stall for minutes — the cause of an occasional beach ball at launch, a quit that seemed to hang, and the Dock reporting "Not responding." Quit now finishes its own work first, so your DAC is always handed back the way you left it. Music.app albums bring their artwork and release year across when they sync. And adding an album to a playlist adds one entry per recording, not one per copy of it.
Longtime Fidelia 1 owner? Fidelia 2 is an all-new app — a free download with a 14-day trial and a one-time unlock, no subscription, so a Fidelia 1 purchase won't restore into it. Thank you for years of listening.
