RE Audio USX2500 2-Channel Class A/B High Speed Stereo Amplifier Dynamic Power: 2500 W, RMS Power (4@14.4V): 250 W x 2, RMS Power (2@14.4V): 450 W x 2, RMS Bridged Power (4): 900 W x 1 THD: &lt;0.05 %, SN Ratio: 85 dB, Frequency Response: 20 Hz ~ 30 KHz Crossover Frequency(Low Pass): 40 ~ 250 Hz Crossover Frequency(Subsonic): 15 ~ 40 Hz, Crossover Frequency(High Pass): 40 ~ 1 KHz, Bass Boost Control: 0 ~ 20 dB, Input Sensitivity: 0.2 ~ 8 V Heatsink Size(WxLxH) [inches]: 9.65 x 19.29 x 2.05, Heatsink Size(WxLxH) [mm] : 245.11 x 489.97 x 52.07, Fuse Rating: 40 A x 3