This invention has been made to provide a speaker system capable of miniaturization and presenting a good sound quality. The relayed request has at least one given IP address of the dynamic host control protocol relay device inserted therein. Mobility models represent users motion, in terms of geo-coordinates andor logical identifiers, such as street names etc. A femtocell clock, a global navigational satellite signal clock, a cellular base station clock, or a cellular enabled communication device clock may be selected as the master clock. The second and fourth subcircuits pull the first and second nodes, respectively, to complementary voltages based on the second clock state to pass the clock signal. Embodiments of the present invention provide for reducing common-mode charge variations in a differential charge-domain pipeline.