[Crypt!c]

ampiflier = external speaker? ya i do! to blast music at the beach or in the toilet ! hehe.

and i guess it does not affect my touch?

im gussing that ur ampliflier is not magneticaly shielded therefore the electro-magnetic waves coming from the speaker is interferring with your connection.

if so, you should go change your amplifier or put a piece of iron (only iron)(half the size of your touch) on top of the amplifier (if there is 2 sides) put on both sides. in that way, the waves will go through the iron and continue routing through the iron and your phones signal would get better.