I really don't understand. Do the mice have very small microphones?
I suspect that there is a language barrier that is obscuring your meaning as well as making you request sound more demanding than you intend.
You may need to explain more fully.
I just realised that you may have meant "microphones" or "mics", not mice.
If that is true then we need to know the following:
1) what type of microphones?
2) What is it for? (or what are the distortion requirements)
3) what will it drive (speakers?)
4) what impedance is the output? (4 ohm, 8 ohm, or something else)
You may be best off googling for "10 watt amplifier schematic" and see what you find.