Circuit for selectively switching read signals from a multiple magnetic head into a memory

A circuit configured to selectively couple read signals from a selected one of a plurality of magnetic systems of a magnetic head to a read channel in a magnetic memory device, comprising:

• a magnetic coil in each magnetic system;
• a preamplifier electrically coupled between the magnetic coil and the read channel, the preamplifier comprising spatially separated and input and output stages, the input stage being spatially associated with the magnetic coil, the output stage being spatially positioned with the read channel, the input and output stages having respective terminals which are electrically connected by a flexible connecting line, the input stage including means placing its terminals electrically connected to said line at a high impedance as long as the magnetic system of the magnetic coil coupled to the preamplifier is not electrically coupled to the read channel;
• and
• selection means operatively electrically coupled to each output stage for supplying a selection signal thereto to select coupling of the magnetic coil electrically coupled to its preamplifier to the read channel.