Ameriphone uses the latest communications technologies to develop superior-quality products that truly meet the unique needs of its customers.??The XL-30 model is designed for people with moderate to severe hearing loss. It has a volume control (up to 30 dB), for loud and clear telephone calls, a tone selector for adjusting sound clarity and distinguishing similar sounding words like "chair" and "share", an audio output jack for direct connection to hearing-aid devices. To crown it all, the phone also features 12 programmable memory dial buttons, an adjustable super loud ringer and bright visual ring flasher, easy-to-see oversized keypad buttons as well as an adjustable outgoing voice amplification (15 dB) for callers to hear you better. Minimize