Board Thread:Questions and Answers/@comment-6517967-20130216021123/@comment-98.202.235.201-20130227211358

The hunting horn will be able to buff yourself or party members but from what I understand, the hunting horn will vary from the psp version in that each hunting horn has different buffs to give just as each bowgun has different ammo types it can fire. There's about a list of five buffs a hunting horn can cast and is listed in game under its statistics.