NPE : PM-2500 2. DAMPING FACTOR : >350 @ 8 OHM 1KHz ; Class AB 3. OUTPUT : 550Wrms @ 8 OHM, 945Wrms @ 4 OHM 4. 1950Wrms @ BRIDGE 8 OHM 5. DIMENSIONS (WxHxD) : 483x88x490 MM. 2U ; 21KG