An armature actuated by the stylus, passes through the centre of a coil which is enclosed between the poles of a permanent magnet. Movement of the armature disturbs the magnetic field through the coil. All the early mono pickups used this principle.
"Thanks for the first class work! I appreciated the ability to track my order and the email contacts you provided during the process. I am enjoying the CD right now. It has unlocked some of my most favorite music that I thought would lost to me forever. I could not find a digital version of this music on the internet. This has worked out great ..."