hi. one of my good freinds has the gems with a revel b15 sub, and rogue audio m150 monoblocks. His system sounds wonderful !! It can take most music, loud. it wont rock quite like his older snell xa75 towers , led zeplen or the beasty boys dont have the sock and punch, but everthing else is pretty awesome sounding. revels can be partnered with tubes , good luck, chrissain