Crown CDI-1000 amplifier for commercial and landscape outdoor projects. Crown CDI-1000 amplifier provides amazing sound to any commercial or landscape outdoor project. Exptremely versitle; rated for 2, 4, 8ohm loads and 70v/100v and 140v outputs. Features onboard digital signal processing that includes crossovers, EW filters, delay and output limiting. DSP Presets AS/S102 = AS & OL-70v speaker with ST-SUB-10.2 AS/S122 = AS & OL-70v speaker with ST-SUB-12.2 AS/HS = AS & OL-70v speaker with HS-SUB-12 AS/AS = AS & OL-70v speaker on both channels BD/CL = BeatDrop or CL-70v BDCL/HS = BD-8/CL-70v speaker with HS-SUB-12 OLD 10 = Old DSP for ST-SUB-10 OLD 12N = Old DSP for ST-SUB-12