Sonovo S1 Dual-Mode Bone Conduction Sound AmplifierSonovo S1 is a dual mode bone conduction personal sound amplifier designed for tinnitus habituation, sound enrichment, and open ear listening. Use Sound Amplifier Mode to enhance ambient sound around you, or switch to Bluetooth Mode and connect your mobile device to play sounds, audio, or other content from the apps of your choice. For people living with tinnitus, sound enrichment is often used to reduce the contrast between tinnitus and quiet