Speaker controller is industry's first power over Ethernet sound masking controller. Power over Ethernet (PoE) and CAT5 cabling provide power and networked digital audio signals to DS8000. Each DS8000 has eight speaker outputs designed to power Dynasound's DS1356 speakers. Each DS8000 is capable of receiving 8 network audio channels. In addition, each DS8000 contains four independent sound masking generators each having full 1/3 octave EQ. Each speaker output has independent control and access to eight audio network channels and the four internal sound masking generators. DSP matrix mixer allows any combination of channels to be delivered to any speaker.