Optimal installation is one duplex receptacle per dedicated circuit. It is optimal because the only connection points resulting are where the cable originates at your circuit panel and where it terminates at the duplex outlet. Anytime you add a connection, you add the potential for introducing distortion and noise across that connection. (Of course, this assumes a single pull of wire from the circuit panel with no breaks or splices.)
Good luck with the installation!
Good luck with the installation!