“…The VORP is set in an appropriately drilled out bone bed. The audiological indication is mild to moderate hearing loss with low losses of up to 1 kHz, whereas due to the better efficiency of the transducer in a higher frequency range, stronger losses can be compensated [158], [159]. The highest auditory threshold gain is between 1 and 2 kHz between 28–37 dB [160], [161], [162], [163] with good long-term stability [164].…”