Phonak receivers: difference between 1m and 3m?

Hearing Aids
#1

I understand that the letter after the number is the power level (p is more power than m), but what does the number mean? Does a 1m have different sound than 3m?

#2

Hi there, no it corresponds to the receiver length.

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#3

Thank you. Why are there different receiver lengths if they have the same sound?

#4

For different sized ears.

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#5

The number is how long the receiver wire is for different sized ears.

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