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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A streamer is told what it is being sent. We compared everything a renderer can see, byte for byte, against the one server proven to play that box at full speed; those two were the only differences left, and both are now declared, for every format. When a stream to a renderer ends, the diagnostic log now says how and why — the box closed it, a newer connection took over, the station went off the air — and how long the box had gone without accepting a byte. A stall that used to show as one request and then silence has a name. Playing bit-perfect to a renderer, the main display names the format again. On that path the box fetches the file itself and Fidelia's own engine never decodes it, and the readout had only ever asked the engine. It now shows what the library already knew. The sidebar stays off the buttons. The Library sidebar's rows used to scroll straight up under the window's close, minimise and zoom buttons. They now stop at a hairline that appears only while something is beneath it, exactly level with the rule across the rest of the window. It was so on every macOS; a long sidebar on macOS 26 was the first to show it. A cover is never another artist's. Finding a cover online checked the album's title and not its artist, so a differently named band's identically titled record could win for having a picture. The artist is checked now. A cover you remove stays removed across launches; it used to be fetched straight back. A purchase that is waiting says so. Apple sometimes holds a purchase for approval — a card verified in Wallet, Ask to Buy, a bank's check. The buy screen used to look as though nothing had happened, which invites buying again. It now says the purchase is waiting on Apple and will unlock here as soon as it clears, on Mac and on iPhone and iPad alike. 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Audiofile Engineering, LLC
    Size
    • 15.2 MB
    Category
    • Music
    Compatibility
    Requires macOS 14.0 or later.
    • Mac
      Requires macOS 14.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Fidelia — Full License $99.99
    • Fidelia — Network & Server $49.99
    Copyright
    • © 2011-2026 Audiofile Engineering, LLC