I am selling a almost new pioneer premier amp. It is a PRS-X320. It does 50x2 rms at 4ohms or 200x1 rms at 4ohms and 100x2 at 2ohms. . That is at 12vdc. It is stable to 1 ohm according to the specs but I am not sure how it handles it. I will accept any reasonable offer or trade. The max power is 125x2 at 4 ohms and 375x1 at 4 ohms.