The 90-Watt ULTRATONE K900FX excels as an extraordinarily-versatile keyboard and drum amplifier, as well as a high-quality 3-channel Public Address (PA) system, with a world class, 12" BUGERA Speaker – all in one compact and easy-to-transport package. Specializing in rich ...The 90-Watt ULTRATONE K900FX excels as an extraordinarily-versatile keyboard and drum amplifier, as well as a high-quality 3-channel Public Address (PA) system, with a world class, 12" BUGERA Speaker – all in one compact and easy-to-transport package. Specializing in rich, accurate tone and professional features, such as a studio-grade Multi-FX processor and own FBQ Feedback Detection System, this powerful workhorse will bring out the best in your performance gig after gig.