Fidelia — Audiophile Player
Lossless Hi-Res, Any Streamer
Only for Mac
Free · In‑App Purchases
Mac
New: multichannel. 5.1 to 9.1.6, per-speaker calibration, 16-channel processing bus. Plus bit-perfect streaming to WiiM, Bluesound, Linn, Naim, Eversolo. One-time unlock.
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 NETWORK, YOUR LIBRARY
Fidelia speaks Lyrion (Logitech Media Server): your server's library sits in the sidebar beside your Mac's files — 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 the original bytes, gapless.
And you don't choose between the network and your signal path. Leave bit-perfect off and the whole chain runs first — HeadSpace, dither, resampler, your Audio Unit slots — then streams the result. Most network players hand the file to the box and stop.
YOUR WHOLE RIG, NOT JUST TWO CHANNELS
Fidelia plays 5.1, 7.1 and 7.1.4 — and up to 9.1.6, sixteen channels — reading the layout each file declares instead of guessing from track order.
The Output Dashboard puts the rig on one surface: your speakers drawn where they sit, your interface's outputs beside them, a live meter on every speaker, so a miswired channel is obvious the moment music plays. Identify sweeps the room a speaker at a time; mute, solo and polarity sit on each speaker.
Calibrate by measuring, not arithmetic: give each speaker the distance you measured and the nearer ones are delayed to match. Two subwoofers can differ, because that is the reason to have two. Your rig is remembered per output device.
Audio Unit slots run a bus up to sixteen channels wide — convolution emitting a filtered channel per driver.
THREE MASTERING-GRADE PROCESSORS, BUILT IN
HeadSpace — headphones are unnatural: your left ear never hears the right speaker as it would in a room. Frequency-dependent crossfeed modeled on real head acoustics gives a soundstage like speakers, not two drivers against your ears.
Pro Dither — moving between bit depths 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, as 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 behaviour as dedicated audiophile hardware.
NATIVE DSD
DSF and DFF, DSD64 through DSD512, decoded in real time, gaplessly, 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.
THREE AUDIO UNIT SLOTS
Load any Audio Unit — EQ, reverb, compression, spatial. Open plugin GUIs without leaving Fidelia; every setting returns as you left it.
BUILT FOR LARGE LIBRARIES
Album art fills itself in, exact matches only — a wrong cover is worse than a missing one. Every playlist remembers its own sort, and duplicates resolve to the best copy you own.
ALSO
• Internet radio — thousands of stations or any URL, quality graded honestly
• Gapless rebuilt from the ground up — no gaps or clicks, even across sample rates and DSD
• Conversion to AIFF, WAV, FLAC, Apple Lossless, AAC, CAF
• Monkey's Audio (APE) import, Music.app library sync
• Scalable player — 5 sizes plus a scale control to 200%
FORMATS
WAV, AIFF, FLAC, Apple Lossless, CAF, MP3, AAC, OGG Vorbis, Opus, AC3, Wave64, Sound Designer II, AU/SND. DSD: DSF and DFF, DSD64–DSD512, native, bit-perfect DoP.
PRICING — NO SUBSCRIPTION
Free to try for 14 days, the full app, no limits. Then a one-time unlock. Network playback — Lyrion libraries and UPnP streamers — is a separate one-time unlock; browsing your server is always free, so you see your library working before you decide.
Fidelia Remote, the iOS companion, is free.
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Your whole rig, not just two channels.
Fidelia plays 5.1, 7.1 and 7.1.4 — and now up to 9.1.6, sixteen channels. It reads the channel layout the file declares rather than guessing from channel order, so a 3.1 record is not played as quad and an LFE lands where it belongs.
The Output Dashboard is the rig on one surface.
Your speakers on the left, drawn where they actually sit; your interface's outputs on the right. Assign by dragging an output onto a speaker, or from the speaker's own menu, which lists free outputs first and names what the busy ones feed.
Every speaker carries its own meter, so a mis-wired rig is obvious the moment music plays. Identify sweeps pink noise through the room one speaker at a time, and mute, solo and polarity sit on each.
Calibrate by measuring, not by arithmetic.
Each speaker takes a distance you measured with a tape, a level trim and a polarity flip. The farthest becomes the reference and the nearer ones are delayed to match — you supply the measurements, Fidelia does the maths. Two subwoofers in different corners can be calibrated differently, because that is the reason to have two.
A rig is a physical fact, so it is remembered per output device: positions, distances and trims survive a relaunch, and stay put when a stereo album follows a 5.1 one. Plug in a different interface and its own rig comes back.
Your plugins go as wide as your rig.
Audio Unit slots run a bus up to sixteen channels across, so a convolver can take a stereo record and emit a filtered channel per driver. Slots that only speak stereo say so, and are bypassed rather than guessed at.
Multichannel travels, too: a 5.1 track sent to a network player is folded down properly instead of arriving as its front two channels, so the centre — and the lead vocal that lives there — is no longer dropped on the way out.
Streaming that tells you the truth about itself.
Try it before you buy it: the network module now has a free trial, so you can hear Fidelia driving your streamer before you decide.
A streamer that refuses a gapless hand-off now falls back the moment it says no rather than at the track boundary — the cause of a track that simply never starts. Backward seeks no longer re-send the whole track, and a briefly busy box is no longer written off for the session. Send Diagnostic Report carries the last fifteen minutes of Fidelia's own log, so what the streaming path recorded comes with it.
A very large library stops making you wait.
Your own tracks are on screen within a third of a second of launch, however big the rest is — anything mirrored from Music.app or a server fills in behind them instead of holding the window shut. On a library of 185,000 tracks that used to take over a minute.
Clicking the Library or a playlist now reacts on the click, and sorting one is about seven times faster. A library that has not changed writes nothing at all when it syncs: those long pauses after a Music.app sync, on a library nobody had touched, were Fidelia rewriting every row to say what it already said. Editing a tag, pinning a version or importing a folder no longer costs a pass over the whole library either.
The album wall changes from one context to the next in a single cut, instead of blinking through the covers it is leaving.
Elsewhere.
Appearance, in General, follows your Mac's Light or Dark setting — or holds one of them whatever the Mac is doing.
Playlists show the order they will play in, and let you choose it — sorting a column is a view. Your Music playlists arrive in the order you arranged them.
The library table keeps the row you selected, and gains a Date Added column. The sidebar goes wider and remembers it; columns keep the widths you give them, and scroll sideways when you ask for more than fit.
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.
The developer, Audiofile Engineering, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Audiofile Engineering, LLC
- Size
- 15.5 MB
- Category
- Music
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Fidelia — Full License $99.99
- Fidelia — Network & Server $49.99
- Copyright
- © 2011-2026 Audiofile Engineering, LLC
