Crown XLI800 Two-Channel 300W @ 4 Power AmplifierThey are suited for musicians, DJs, and entertainers as well as houses of worship, discos, and pubs. The four models in the series are the XLi800, XLi1500, XLi2500 and XLi3500. They are identical except for output power. Features include RCA and XLR inputs, user selectable input sensitivity of 0. 755V or 1. 4V, Speakon and binding post outputs, stereo parallel bridge mono mode, power fault signal presence clip indicators, forced air cooling; and