The Yamaha P2500S amplifier delivers 250 watts per channel into 8 ohms or 310 watts per channel into 4 ohms in stereo mode. In bridged mode at 4 ohms, it outputs 620 watts. When operating with 2 ohms per channel, it can output 650 watts. The amplifier also uses Yamaha's EEEngine technology for efficient power consumption and heat reduction.