Rel T/9x Subwoofer BlackUnlock faster, more dynamic performancedelivering higher output and greater impact, all while staying within your budget. 300 watt Class A B Amplifier 10" FibreAlloy Active Driver 10" Down Firing Passive Driver Home theatre ready Serie T 9x: Bigger and Better The job of any range topper for REL is to deliver more of everything, particularly output and dynamics. The 9x is no different in this regard, as it delivers the goods in both music and theatre