Guitar tone format developed by Line 6 that stores custom guitar amp and cabinet models; can be opened and edited on a computer using GearBox software and transferred to a PODxt or POD X3 effect box via USB; may also be used with audio software that supports the GearBox Plug-in.
Program(s) that open l6t files
Mac / Windows: Line 6 Gearbox
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/l6t
