I am configuring a multispeaker system in my new office. We use only one source...XM radio. Has anyone ever tried to hook the line level output from an XM satellite reciever directly to the amplifier, and thereby eliminating a preamp from the system? I would use the line level output from the xm receiver and the individual volume pots for each chaneel that are on the amplifier. Will there be enough output from the xm receiver to drive the amp? I'm basically too lazy to reconfigure my existing system to try this and was hoping someone will know the answer right off. If it works, it would be great because I wouldn't have to buy a preamp. Thanks in advance.