This would go to a bard everytime, simply cuz of the stringed instrument modifier, and its got FT type mana regen, bards gotta have that since Kei or anything like that don't help em.
Went to a ranger earlier today... just because it has "Stringed Instruments" doesnt mean it should only go to a bard... if it did then it would show "Class: BRD" "Race: ALL"
Agreed. There are plenty of nice items with bard instrument modifiers, and due to the two excellent effects, this amulet would be great for any hybrid.