Bundle created by Line 6 POD HD400 Edit, a program that enables you to edit instrument effects; contains up to 128 custom presets that customize the sound of your guitar; changes the settings under categories such as "AMP," "FX," and "REVERB," when loaded.

To create the H4B file, customize your settings, select File → Save Bundle As..., name the file, choose the save location, and click Save. To open the H4B file, double-click the file or select File → Open Bundle..., navigate to the file, and click Open. In Mac, the default save location for H4B files is in the following directory: /Documents/Line 6/Tones/POD HD400 Edit/Bundles In Windows, the default save location for H4B files is in the following directory: \My Documents\Line 6\Tones\POD HD400 Edit\Bundles NOTE: The H4B extension was replaced by .H5B when POD HD500 Edit was released.