In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The WorkingPro 4x10 delivers the world-famous SWR package at a killer price, with new features to boot. It handles 400 watts and reproduces the thick low-end, sizzling highs and cutting midrange you expect from SWR. Full range tone and performance are enhanced by the specially-tuned front slot port, the custom-designed SWR 10" drivers, and the removable casters for easy transportation!