An apparatus used in drop-in, under the counter beverage dispense systems for maintaining the temperature of a syrup by utilizing a heat sink. Here, configurations for an amplifier and switch network are provided, which generally cancel noise from the \u201cground switch,\u201d so as to provide an improvement over conventional configurations with little overhead. The scroll compressors include inverter devices that allow for independent modulation of the speeds of respective drive motors. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained. A mixer can mix an electrical signal emerging from the optical signal with the second signal. The processor comprises a plurality of data processing units; and a plurality of SIMD controllers, each connectable to a group of data processing units of the plurality of data processing units, and each SIMD controller arranged to handle an individual processing task with a subgroup of actively connected data processing units selected from the group of data processing units.