The BOSE's POWERSHARE PS604 is a 4-channel installed amplifier with an uneven distribution of 600 watts across all four outputs. Each output can have its own output level, EQ, and low-impedance/high-impedance (Low-Z/Hi-Z) settings. The PS604 supports built-in loudspeaker EQs for the FreeSpace DS 16, DS 40, DS 100, FS3B, Panaray 402 and 802 Series IV, MA12EX, and RoomMatch Utility RMU105 and RMU108, as well as a Flat setting for FS3 systems. Access the extensive digital loudspeaker processing functions utilising the free web downloaded PowerShare Editor software for applications that require greater customisation. The PS604 may additionally connect up to four gangable CC-1 ControlCenter zone controllers via CAT 5 cables for remote volume control.