SuperEar
SuperEar Personal Sound Amplification Product Model SE5000 Increases Ambient Sound Gain 50dB
MEDca
Personal Sound Amplifier - Audio Hearing Amplifier Device and Voice Enhancer Device for Sound Gain of 50dB, Up to 100 Feet Away, Pocket Hearing Devices
MEDca
Premium Digital Hearing Amplifier - Invisible in Canal (CIC) in-Ear Mini Sound Enhancer Set, Near-Invisible, Noise Cancelling, Personal Sound Hearing Amplifier - Black, Left Ear