I think the quoted1800 is at 2 ohms. Its a class H 3 tiered rail switch design. One 15A cord on it. Havent hooked it up yet. Wanna be sure I dont cook something. Reading manual thoroughly.

8ohm 600w
4ohm 1000w
2ohm 1800w

This is with the 2ohm voltage limiting mode engaged. burst rated at 1000/1800/2500

1000/1800/NA 4ohm mode no limiting mode. burst rated at 1800/3500.

I will run it in limited 2ohm mode so I reduce the risk of letting the smoke out of my speakers.... I expect a noise floor when I hook this up. No idea how it will respond to my puny speakers.