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Audio Freezer keeps your USB DAC (or any audio device) locked to the sample rate you choose, re-applying it automatically whenever the device reconnects or macOS resets it. If you need help, we are happy to assist.
Email contact@zerostorypoints.com and we will get back to you. Please include your macOS version and, if relevant, the audio device (DAC) you are using.
macOS 13 (Ventura) or later. Works with any Core Audio output device.
macOS does not reliably remember the sample rate of USB DACs. When the device powers up, reconnects, or the Mac wakes, Core Audio snaps it back to a default such as 44.1 or 48 kHz. Audio Freezer watches for this and immediately sets the rate back to the one you chose.
Audio Freezer is free for 7 days from the day you install it. After that, a one-time unlock keeps device management running. The app stays usable either way; only the automatic rate and volume management pauses until you unlock.
Purchases and refunds are handled by Apple. You can request a refund at reportaproblem.apple.com.
No. Many USB DACs and amplifiers use a hardware volume knob and expose no software volume to macOS. Audio Freezer correctly shows these as hardware-controlled, which keeps playback bit-perfect.
That's expected, not a failure. Some players — Qobuz is the best-known — change your DAC's sample rate to match each track so the audio reaches it without resampling. Every rate change makes a DAC re-lock, which clicks audibly on many units, so while audio is streaming Audio Freezer lets the player keep the rate it asked for instead of fighting it. The 🔒 marks that deliberate hold: "a player has the rate right now". A few seconds after playback stops, the frozen rate is restored and the ✓ returns (⚠︎ is reserved for genuine mismatches). If you'd rather have the rate snap back instantly even mid-stream, turn off Settings → General → "Wait for playback to end before re-freezing".
The click is your DAC's hardware mute relay re-locking when the sample rate changes — it happens inside the DAC, and no software can buffer it away (Audio Freezer is not in the audio path; that's what keeps playback bit-perfect). You have two options. Keep your player's automatic rate switching and accept one click per rate change — that's the price of native-rate, resampling-free playback. Or turn rate switching off in the player (in Qobuz: the audio device settings) so the device stays at its frozen rate — zero clicks, with macOS resampling everything to that rate. Spotify users never hear clicks because Spotify always plays 44.1 kHz and never touches the device rate.
Both. The menu's Measured value is your DAC's clock rate as reported by its own driver — the rate the hardware is really running at. A streaming app's "up to …" line describes the service's ceiling (Qobuz's catalog tops out at 24-bit/192 kHz), not your DAC's. A DAC that accepts 768 kHz will happily run at 768 kHz while the app streams 44.1 kHz into it — macOS resamples in between.
A one-click switcher for the system default output — the same thing as the Sound menu, without leaving Audio Freezer. Click a device and macOS routes audio to it; the checkmark marks the current default, and the Monitoring readout follows your choice. The section appears when more than one output device is connected.
Settings → How it works has a short in-app guide (freezing, rate changes during playback, the menu readout, volume). The fuller story is on this page and in the App Store description.