An agent server registers a request information for purchasing from an authorized member in a request information data base by way of the Internet. A circuit interface provides communication between the field programmable gate array, the mask-programmable gate array and the integrated circuit IO. Other embodiments may be described and claimed. A swingarm is attached to the swingarm interface and supports a rear wheel. In particular, the bobbin of the bobbin-coil assembly is adapted to resist induced eddy currents thereby allowing a fewer number of coils to be used which in turn reduces undesirable interaction with the musical instrument pickup. The interior volume has provided therein a plurality of hardware mounting channels each includes by a pair of spaced-apart interior walls.