I used to run the RE Audio DTS1500-1, clamped at 965 watts at 1ohm with rise to 1.8. It was rated at 1000 watts rms at 1ohm. So it did rated. And managed a 143.7db with 1 Obsidian 15 in a 35hz tuned daily enclosure. Not too shabby.
The DTS1000.1 is only rated for 800, but I bet it does all of rated.
Good solid amps. I beat the piss out of mine. And its still going in another system now.
Edit: My old DTS1500-1 was also purchased from Sonic