Help / Playback & output
The signal path & the bit-perfect badge
Vesari Stylus shows you exactly what happens to your music between the file on disk and your audio device, and it's honest about whether the sound is being touched along the way.
Open DSP Rack and you'll find the signal path: a top-to-bottom view of your music's journey, from the source file, through every stage that can act on the sound, to the output going to your device. At the top sits a small badge. It reads bit-perfect only when the whole chain is genuinely untouched - and the moment anything alters the audio, the badge changes and tells you why. No fake "hi-res" lights, no green glow just because you picked a fancy output mode.
When the badge reads bit-perfect
The badge confirms bit-perfect only when all of these are true at once:
- The output is in exclusive mode, so your music bypasses the Windows mixer.
- Volume is at unity - full and untouched, with no digital attenuation.
- The sample rate matches the file, so nothing is resampled on the way out.
- Your device's bit depth is at least as deep as the file's, so no bits are lost.
- Dither is off, because nothing is reducing the bit depth.
When every one holds, the bits leaving Vesari Stylus are identical to the bits in your file. If any one isn't met, the badge won't claim bit-perfect - it would rather under-promise than tell you something it can't stand behind.
When it downgrades - and why it says so
The badge stops reading bit-perfect the instant something touches the audio, and it names the cause. Common triggers:
- Volume below unity - digital volume changes the samples.
- Any EQ - the graphic equalizer, parametric EQ, and crossfeed all reshape the sound.
- ReplayGain / R128 - automatic loudness levelling adjusts the signal.
- Resampling - the output rate no longer matches the file.
None of these are bad. They're features you chose, doing exactly what you asked. A badge that stayed lit while your EQ was running would be lying to you - and then you couldn't trust it at all. By stepping down honestly and naming the reason, it stays worth trusting.
The path also shows the source format going in and the actual format handed to your device coming out, so any resampling or conversion is visible rather than hidden. Where the audio leaves for your hardware, the path is honest about its own limit, too: what happens inside the device, past the point the software can see, isn't something any player can verify for you.
The badge is free for everyone
The signal path and its bit-perfect badge are free for every owner. It's always the honest chain and a live verdict of what the software knows it's doing with your audio.
Going further - actively proving transparency by capturing the output and comparing it against the source, so you can confirm nothing changed rather than take the badge's word for it - is a deeper capability for listeners who want to test the result themselves. It's part of the premium output tools rather than the everyday view.
Vesari Stylus is currently a Windows app, and it's a one-time purchase - no subscription, no account, no telemetry.