Suddenly, it's easy to pass audio between applications on your Mac. Create virtual audio devices to take the sound from applications and audio input devices, then send it to audio processing applications. Loopback gives you the power of a high-end studio mixing board, right inside your computer!

Combine Audio Sources

Configuring a virtual audio device from multiple sources is easy. Just add the applications and physical audio devices you want to include to the Audio Sources table to get started.

Available System-Wide

Your Mac will show Loopback's virtual devices exactly like physical devices. Find them listed among other devices in System Preferences or select them as an input or output in any audio app.

Send Audio Between Apps

Loopback can also create pass-thru devices, which send audio from one app to another. Set the Loopback device as the output in one app and the input in another to make audio flow directly between the applications.

Play Audio to All Your Podcast Guests

Combine your mic with audio sources like iTunes or QuickTime Player, then select your Loopback device as your source in Skype. Presto! Your guests all hear both your voice and your audio add-ons.

Record Gameplay Videos

Making gameplay videos with great audio can often be very difficult. If you're using a device like Elgato's Game Capture hardware and you want to record both your microphone and the game's audio at once, Loopback can assist!

Combine Hardware Devices

Apps like GarageBand, Logic, and Ableton Live only record from a single audio device at once. Thankfully, they offer recording from many channels. With Loopback, you can combine multiple input devices into one virtual device for easy recording.

Create Top-Notch Screencasts

Screen recorders, including QuickTime Player, allow you to include either microphone audio or all system audio at once. Neither option is ideal. Create a virtual device that grabs just the mic and the app’s audio to get exactly the audio you want.

Route Audio For Broadcasts

Set a simple (pass-thru) device as the output at the end of an Audio Hijack chain, and then as the input source in Nicecast. Now listeners can tune in to a live stream of your podcast as you record it!

So Much More…

With Loopback, you gain incredible power and control over how audio is routed around your Mac and between applications. We can't wait to hear about the incredible new uses you find for it!

LOOPBACK 2.2.4

Fixes and Improvements in ACE 11.7.1

The Audio Capture Engine (ACE) has been updated to 11.7.1, with fixes for several rare issues.

New "Sound Effects” Special Source

A new "Sound Effects” special source has been added, making it possible to capture sound effects like alerts in the Messages app, or the Trash being emptied.

Enhancements to Loopback's Built-In Updating

Loopback's updating code has been overhauled and improved. It is now based on Sparkle 1.26.0, with several customizations.

To avoid possible issues, Loopback will no longer offer to "Install on Quit”. Automatic background updating has been removed as well, placing the user in charge of all updates.

The update interface has been improved, with several design and text enhancements.

Finally, the new "Skip for Now” button allows you to delay updating if desired.

As always, we strongly recommend leaving the "Automatically check for updates” option enabled.

Loopback's manual is now provided online, rather than being built in to the application. The application's "Help” menu has also been modified and streamlined, to get you assistance as quickly as possible.

Volume sliders now reset to 100% when their readout is double-clicked.

Many debugging improvements have been made:

Available logs have been cleaned up.

Active logs are now listed in the logging files.

Machine details are no longer needlessly included in copied errors.

Logs are now activated with simple checkboxes.

When a log is activated, it will also collect recent crash logs, to better understand any issues.

A "Quit and Relaunch for Debugging” option has been added, accessed by pressing option in the Help menu.

Command-line debugging options have been added.

Assorted drawing issues where items would fail to properly highlight on MacOS 11 (Big Sur) have been corrected.

Loopback's windows will now interact with full screen mode on MacOS 11 (Big Sur) as expected. This also corrects a previous incompatibility with window managers such as Magnet.

Loopback devices will now work correctly when used as the system's "Sound effects” device.

USB device references for certain low-quality devices have been improved, to work better with some third party drivers.

It's now possible to access several relevant menu items while the initial Quick Tour is open.

The "Purchase” button in the License window now uses a better link to get to the Buy page.

The Update window's width has been tweaked, to handle longer titles.

Get Access to Test Builds

Loopback now features a new "Check for test releases” hidden preference. When active, you may receive notice of pre-release versions of the software, ahead of its wide release. If you're interested to test updates, you can turn this option on in the Debugging window (accessible by holding option while viewing the "Help” menu, then selecting "Quit and Relaunch for Debugging”).

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