Ultra Portable Performance Effortless transport for rehearsals and 350 watts of power through the 2x10 inch speakers (500 watts with extension) suitable for a broad range of venues. Tough vinyl covering protected with metal corners provide lasting protection. Variable Q Inherited from the 800RB, this unique design varies the EQ bandwidth to retain a musical response even at extreme settings. Switch Mode Power Extremely light weight switch mode power supply and power amp deliver 350W internally and 500W with an extension cabinet. Protection Internal circuitry is always on the alert to problems, indicated at the power switch ring. Drivers By GK Special drivers with 2 inch edge wound aluminum voice coils, designed just for this cabinet, manufactured in the GK USA factory. Ultra Light Weight Plywood construction, aluminum chassis, switch mode power supply and power amp deliver 500W performance in a rugged 35lb package. Each speaker is isolated in it's own chamber eliminating tone robbing standing waves and sound leakage through the cabinet walls. Critically Damped Our design team tuned the ports for optimum performance while coupled to the cabinets specific designed speakers. The ports coupled with a specific jute blend of damping material provides the right amount of damping at the right frequencies, for optimum response.