content: I have a whole-house sound entertainment system, which includes a pair of speakers in the dining room, a pair of speakers in the living room, and a pair of speakers in the bedroom. I have a AirportExpress connected directly to this unit, and it has no problem powering all six pairs of in-ceiling speakers. In fact, this unit is so powerful, I cannot turn the volume up beyond the midpoint because I fear that my windows will break. An excellent product for the price.Note: This unit has a single RCA output, so make sure you use a splitter if you intend to connect multiple pairs of speakers to this amplifier.