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What is the difference between Siemens hearing aid mobile 30 1 and 50 1?
Yidong 30 1 is 8 channels of intelligent all-digital signal processing, and 50 1 is 12 channels of all-digital signal processing. Compared with 30 1, 50 1 has more audio extensions, allowing the wearer to hear richer high-frequency sounds. There is also natural ear technology, which is closer to the real ear of human beings and the sound heard is more comfortable and natural.