It's a 2ch. Pioneer GM-X862 125w x 2 (rms), 250w x 2 (max), 380w x 1 (rms) or 760w x1 (max) all are 4 ohms at 14.4v. It can go down to 2 ohms at 2 ch. mode not on 1 channel. Don't have the manual anymore.