The ARRISUN 40/25 2.5/4K HMI PAR is a much loved industry standard. So if you are punching light through a silk or bouncing off a poly board the ARRISUN will do a fantastic job. The 40/25 can be used with a 2,500 or 4,000W HMI lamp so it is a very versatile light. It comes with a range of converter lenses to allow creative beam control. It has low noise, 75hz and flicker free 1000hz.