We like watching people who are playing a good tune with their guitars. It’s quite normal for us to be seeing guitar players making their music heard with their own amplifiers. We just don’t see that there is more than just the audio cable that sends the signal from the guitar to the amp. The guitar pickups make it possible for the vibrations that we hear on the guitar to be sent to the amplifier. The pickups like the emg pickups convert these vibrations to electrical signals appropriate for the amplifier. Guitar pickups allow the guitars to be connected to equipment such as amplifiers and mixers to make louder music that can be heard by more people and thus be able to hold concerts with their instruments.