ClearSounds VoIP phones, accessories, products and parts. - ClearSounds portable phone amplifier- A useful product to substantially boost the listening volume of your existing telephone and reduce the...

ClearSounds VoIP phones, accessories, products and parts. ClearSounds Portable Amplifier 40dB Increase - Portable telephone amplifier- Receiving volume control (0 to +30dB)- 40dB gain with boost button...