SuperEar
SuperEar Rechargeable Sound Amplifier Complete System with Headphones and Earbud Increases Sound 50dB 3 Tone Frequency Selection
ClearSounds
ClearSounds CSC500 Amplified Landline Phone with Speakerphone and Photo Frame Buttons - Up to 40dB Amplification, T-Coil Hearing Aid Compatible
ResponseBridge
ResponseBridge Bluetooth Voice Amplifier with Microphone Wireless Headset, 25W Loudly Personal Handsfree Portable Microphone with Speaker, Echo Amp Small Pa System for Teachers Classroom Coaches ect
Behringer
Behringer SU9920 SU9920 Behringer SU9920 Sonic Ultramizer Ultimate Stereo Sound Enhancement Processor, Black