An implantable hearing implant comprising: an implantable coil case containing a communications coil for transcutaneous communication of an implant communication signal, the coil case being made of biocompatible resilient material and having a top lateral surface and a bottom medial surface; a magnet receptacle located within the coil case; opposing receptacle openings in the top lateral surface and the bottom medial surface of the coil case; an implant magnet fitting within the magnet receptacle and having: i. opposing end surfaces (406, 407) with corresponding end diameters, and ii. a center body region located between the end surfaces (406, 408) and having a corresponding center body diameter, wherein the implant magnet and the receptacle openings are configured to permit the implant magnet to be inserted into or removed from the magnet receptacle through the receptacle opening in the top lateral surface and/or the receptacle opening in the bottom medial surface of the coil case; characterized by comprising a bilevel stiffening ring cage configured to be embedded in the coil case around the magnet receptacle, the bilevel stiffening ring cage having an upper level and a lower level arrangement to cooperate to secure the implant magnet within the magnet receptacle, wherein the upper level and the lower level can cooperate to expand an inner diameter of the bilevel stiffening ring cage during insertion and removal of the implant magnet through the receptacle opening in the top lateral surface or the receptacle opening in the bottom medial surface of the coil case. an implantable coil case containing a communications coil for transcutaneous communication of an implant communication signal, the coil case being made of biocompatible resilient material and having a top lateral surface and a bottom medial surface; a magnet receptacle located within the coil case; opposing receptacle openings in the top lateral surface and the bottom medial surface of the coil case; an implant magnet fitting within the magnet receptacle and having: i. opposing end surfaces (406, 407) with corresponding end diameters, and ii. a center body region located between the end surfaces (406, 408) and having a corresponding center body diameter, i. opposing end surfaces (406, 407) with corresponding end diameters, and ii. a center body region located between the end surfaces (406, 408) and having a corresponding center body diameter, wherein the implant magnet and the receptacle openings are configured to permit the implant magnet to be inserted into or removed from the magnet receptacle through the receptacle opening in the top lateral surface and/or the receptacle opening in the bottom medial surface of the coil case; characterized by comprising a bilevel stiffening ring cage configured to be embedded in the coil case around the magnet receptacle, the bilevel stiffening ring cage having an upper level and a lower level arrangement to cooperate to secure the implant magnet within the magnet receptacle, wherein the upper level and the lower level can cooperate to expand an inner diameter of the bilevel stiffening ring cage during insertion and removal of the implant magnet through the receptacle opening in the top lateral surface or the receptacle opening in the bottom medial surface of the coil case.