2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. This instrument power amplifier takes the transparent Power Engine capabilities to large-venue capacity. The Power Engine 400 produces 200 watts per side at 8 Ohms and is a heavy-duty module that will fit in a 2U rack space. The oversized power supply with a toroidal transformer delivers pneumatic punch with a natural transient response, while the tone is pure and uncolored. Each model is super-reliable with top-quality Toshiba power transistors and a heat-sensor equipped cooling fan.