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 track is known by where it lives. A music server gives every track an internal name, and some servers mint new ones each time they re-index their library — the same track, called something else by the afternoon. Fidelia filed by that name, so a server re-indexing while Fidelia read it could enter the same music into your library again and again, and the stored library kept every copy: enough of it, on a server that re-indexes often, to crowd the Mac's memory the next time Fidelia opened. And when a server passed an old name on to a different track, the newcomer took the older one's place, so an album could quietly come up a track short. Fidelia now recognises a track by where its bytes are, which is not something a server rearranges. Whatever it calls that track today, it stays the row it has always been, and nothing a re-index shuffles can displace something else. Copies already in your library are cleared out the first time you open this version, and the playlists holding them go on working. 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 based, for example, on the features you use or your age. Learn More

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

    Provider
    • 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