For the moment, you need Google Chrome or FireFox (did not test with Microsoft Edge), preferably on Mac OSX or Linux/Jack (FF only, you'll need a special build or to add some command line options) if ...

Then you can try adjusting the knobs, sliders, etc. You can also choose different demo direct input tracks in the menu below the audio player. If you want to try with a real guitar, it's better to use ...

At Berklee, the curriculum requires you to record audio with an audio interface. Berklee recommends the PreSonus AudioBox USB 96 25th Anniversary as a reliable, portable, entry-level audio interface. ...