Abstract: A cochlear implant including a cochlear lead, an antenna, a processor case, and a printed circuit board assembly located within the processor case. The processor case may include a base with a bottom wall and first and second side walls that together define a one-piece, unitary structure, a first end wall, attached to the bottom wall and to the first and second side walls, including a first plurality of feedthrough pins, a second end wall, attached to the bottom wall and to the first and second side walls, including a second plurality of feedthrough pins, and a cover attached to the first and second side walls and to the first and second end walls.