To beat the competition. You have to think “Big”, but most of all you have to go “Nuclear”. Soundstream engineers designed the XXX amplifiers to produce bone-crushing power in one heatsink. If you still want more. Strap 2 of the XXX’s together on a 2-ohm load and blow away the competition with double the power! XXX-6500 Amplifiers (x2) are responsible for the loudest legal dB Drag Racing score recorded in Australasia in 2005 – Team Soundz Explosive achieved 167.2dB in Monster Class using 1x Soundstream SPLX-122 Woofer.