Fidelia — Audiophile Player

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.