The New EB series contains the EB4000, EB5000, EB6500. Each EB unit boasts the new iGX (simple I platform engine). We increased the power output of the previous EB3800 by 200 watts to the EB4000. Most importantly the entire EB series features the all new Honda Exclusive iAVR Power advantage. This Honda Exclusive advantage allows for additional power from the unit for up to 10 seconds. The additional iAVR power is created by the combination of the following items: The iGX Honda Engine with Digital Capacitive Discharge Ignition (DCDI) ignition, Self Tuning Regulator (STR) Governor, and Current Transformer (CT) Sensor coupled to the Auto Throttle and the new Digital Auto Voltage Regulator (DAVR).