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Cat9kv-prd-17.12.01prd9.qcow2 [hot] — Download

Cable-free audio routing for Mac

With the power of Loopback, it's easy to pass audio from one application to another. Loopback can combine audio from both application sources and audio input devices, then make it available anywhere on your Mac. With an easy-to-understand wire-based interface, Loopback gives you all the power of a high-end studio mixing board, right inside your computer!

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A Transit System For Your Audio

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Combine Audio Sources

Pull audio from multiple sources into one virtual device! Just add the applications and physical audio devices you want to include to the Sources column to get started. download cat9kv-prd-17.12.01prd9.qcow2

Powerful Channel Options

Add as many output channels as needed, then configure your routing with easy and powerful virtual wiring. Customizing exactly where audio flows is a snap. Upload the

Pass-Thru, Too

A Pass-Thru device allows you to pass audio directly from one application to another, with almost no configuration required. Loopback pipes audio around for you. | Use a download manager (like wget -c


Virtual Devices Are Available to All Apps, System-Wide

FaceTime

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Zoom

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And Many More

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Great uses for Loopback

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Play Music And More to Podcast Guests

Combine your mic with audio sources like Music or Farrago, then select your Loopback device as your source in Zoom. Presto! Your guests hear both your voice and your audio add-ons.

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Turn Multiple Hardware Devices Into One

Apps like GarageBand, Logic, and Ableton Live are limited to recording from just one audio device at a time. Thanks to Loopback, you can combine multiple input devices into a single virtual device, to record all your audio.

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Create Top-Notch Screencasts

Most screen recorders allow you to include your mic's audio, and some may allow recording of system audio, but neither option is ideal. Instead create a virtual device that grabs your mic and the app’s audio to get exactly the audio you want.

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Record Gameplay Videos

Making gameplay videos with great audio doesn't have to be difficult. Use Loopback with devices like Elgato's Game Capture hardware to record both your microphone and the game's audio at once!

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Pairs Well With Audio Hijack

Make a simple Pass-Thru device in Loopback, then set it as the output on the end of any Audio Hijack chain. Now, you can select that source as the input in any app to have it receive that audio.

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So Much More…

Loopback gives you 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!

Upload the .qcow2 file and rename it to virtioa.qcow2 if necessary for the emulator to recognize it. Fix permissions using the EVE-NG wrapper script.

This is the native environment for .qcow2 files.

This essay explores the intersection of enterprise networking and virtualization through the lens of the Cisco Catalyst 9000V The Virtual Frontier: On the Trail of the Catalyst 9000V

| Error | Cause | Solution | | :--- | :--- | :--- | | | Your CCO account lacks entitlement. | Link a valid service contract to your profile or request a trial license from your Cisco AM. | | File corrupt after download | Interrupted download or proxy caching. | Use a download manager (like wget -c ) or clear your browser cache. | | VM fails to boot (Guest has not initialized) | Incorrect hypervisor settings; missing CPU flags. | Ensure CPU model includes vmx or svm . On KVM, set CPU to host-passthrough . | | Out of disk space during decompression | The .qcow2 is sparse but expands. | Allocate at least 20 GB of free space on your hypervisor’s storage. |

to enable the Network Advantage license features once it's booted?

: Community members often host these for lab use on sites like GitHub , but these are unofficial and should be used with caution for security and licensing reasons. Implementation and Requirements

Get Loopback

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download cat9kv-prd-17.12.01prd9.qcow2 While using Loopback in trial mode, limitations are applied.
Purchase to unlock the full version.

For MacOS 14.5 to 26
Loopback 2.4.8 Nov 4, 2025
download cat9kv-prd-17.12.01prd9.qcow2 Release Notes

Older MacOS version?
Learn about legacy downloads →

Cat9kv-prd-17.12.01prd9.qcow2 [hot] — Download

Upload the .qcow2 file and rename it to virtioa.qcow2 if necessary for the emulator to recognize it. Fix permissions using the EVE-NG wrapper script.

This is the native environment for .qcow2 files.

This essay explores the intersection of enterprise networking and virtualization through the lens of the Cisco Catalyst 9000V The Virtual Frontier: On the Trail of the Catalyst 9000V

| Error | Cause | Solution | | :--- | :--- | :--- | | | Your CCO account lacks entitlement. | Link a valid service contract to your profile or request a trial license from your Cisco AM. | | File corrupt after download | Interrupted download or proxy caching. | Use a download manager (like wget -c ) or clear your browser cache. | | VM fails to boot (Guest has not initialized) | Incorrect hypervisor settings; missing CPU flags. | Ensure CPU model includes vmx or svm . On KVM, set CPU to host-passthrough . | | Out of disk space during decompression | The .qcow2 is sparse but expands. | Allocate at least 20 GB of free space on your hypervisor’s storage. |

to enable the Network Advantage license features once it's booted?

: Community members often host these for lab use on sites like GitHub , but these are unofficial and should be used with caution for security and licensing reasons. Implementation and Requirements