Evidence for binaural advantages of hearing when both ears are stimulated compared with stimulation of one ear alone are well known in normal listeners. However, many people have noticeable asymmetry in hearing. Asymmetrical hearing can occur when acoustic thresholds are different between ears. To improve the potential for binaural hearing benefits, bilateral input is needed. In case of children with asymmetric hearing who wear bilateral hearing aids with minimal-to-no benefit in the poorer ear or a unilateral HA in the better ear while leaving the poorer ear unaided, bimodal hearing (i.e., a cochlear implant [CI] in one ear and a contralateral hearing aid [HA]) is recommended. This talk will review the benefit of bimodal hearing and the disadvantages of unilateral hearing or binaural hearing with significantly different sound thresholds. Selected studies will be reviewed to demonstrate the improvements in speech recognition, localization, and functional communication in individuals who use bimodal stimulation. And our experience in Kyungpook National University will be discussed.