Fidelia — Audiophile Player

Fidelia is a reference playback system for Mac: a complete, inspectable signal path from your files to your DAC, your headphones, or your whole multichannel rig. One purchase, no subscription.

FOUR MASTERING-GRADE PROCESSORS, BUILT IN
Equalizer — a ten-band EQ in Fidelia's own chain, with clip-safe automatic preamp and direct import of AutoEQ correction profiles for thousands of headphone models.

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.

Reference SRC — linear-phase and minimum-phase engines from professional mastering practice, with five quality presets.

THREE AUDIO UNIT SLOTS
Load any Audio Unit — EQ, convolution, room correction, spatial. Plugin GUIs open inside Fidelia; every setting returns as you left it. The slots run a bus up to sixteen channels wide, so a convolver can emit a filtered channel per driver.

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, like dedicated audiophile hardware.

YOUR WHOLE RIG, NOT JUST TWO CHANNELS
Fidelia plays 5.1, 7.1 and 7.1.4 — up to 9.1.6, sixteen channels — reading the layout each file declares, not 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 each, 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 every 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 — that's the reason to have two. Your rig is remembered per output device.

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.

YOUR NETWORK, YOUR LIBRARY
Fidelia speaks Lyrion (Squeezebox): 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.

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
• 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, DSF, DFF.

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.