The recipient's eardrum is replaced by a sound sensitive microfilament membrane capable of detecting sounds at a greater range of frequencies than normal. The strength of the membrane also serves to better insulate the ear against sound damage.
Benefit: +4 to perception checks involving listening. +4 to saving throws to resist being deafened by a sonic attack.
Type: Internal
Hardness/Hitpoints: -/2 (per ear)
Base Purchase: 150,000 each
Restrictions: None