Bundle created by Line 6 POD HD300 Edit, a program that enables you to edit the sound output of your guitar effects; contains custom presets that customize the sound of your guitar; changes the settings under categories such as "GATE," "VOL," and "REVERB," when loaded; holds up to 128 presets, which is the alternative option to storing individual presets in the .H3E file.

To create the H3B file, customize your settings, select File → Save Bundle As..., name the file, choose the save location, and click Save. To open the H3B file, double-click the file or select File → Open Bundle..., navigate to the file, and click Open. In Windows, the default save location for H3B files is in the following directory: \My Documents\Line 6\Tones\POD HD300 Edit\Bundles In Mac, the default save location for H3B files is in the following directory: /Documents/Line 6/Tones/POD HD300 Edit/Bundles NOTE: The .H4B extension replaced the H3B extension when POD HD400 Edit was released.