MixTester is a free tool for sending gapless audio to people for feedback. Quickly A/B between multiple mixes to hear what changes sound like in different environments.
Primarily designed for mixing and mastering engineers, but any bedroom producer can use it. It's also a great way to get feedback on a single mix if you'd like.
Yes! You can password-protect your pages to keep people from stumbling into them if you're concerned about security. We don't claim to own any rights to files uploaded—we just host them to make it easy for you.
Users can vote for their preferred track, and you can see the totals from the project page. Users can also submit timestamped comments on specific mixes, pinpointing exactly where they have feedback.
Yes! From the project page (just make sure to save the URL and password if you have one), you can add and remove your uploaded tracks to update. Then just let your users know 'new mixes are up' for feedback.
You can use full-quality WAV or AIFF files, and we will stream them as such. However, if you're concerned about users' internet speeds, it might be best to upload MP3s.
Yes, MixTester is completely free to use. Upload unlimited mixes and get feedback without any cost.
Projects remain accessible for 30 days from creation. You can always delete them manually from your project page if needed.
You can upload files up to 100 MB per track. We recommend keeping individual files optimized for the best streaming performance.
No account required! Just create a project, upload your files, and share the link. Make sure to save your project URL to access it later.
MixTester provides gapless audio playback, side-by-side A/B comparison, voting, and timestamped comments—all in a dedicated audio comparison interface. No downloads required for your clients.
Yes! MixTester works on desktop, tablet, and mobile browsers, so your clients can review mixes from anywhere.
MixTester works on all modern browsers including Chrome, Firefox, Safari, and Edge.
Create your first project and start getting feedback on your mixes today.
Create a Project