Hi all, I would like to get either a Sansamp RPM or RBI, as I'm a fan of Geddy's tone from the Vapor Trails album and onwards, although the Snakes and Arrows tone is good, it doesn't appeal to me as much as the tone he got from Vapor Trails and the Rush in Rio DVD for that matter. Anyways, my question is, do I need an amp in order to run the RPM or RBI? Reason I ask is because at a local guitar shop, I've asked to play with one and they always say to come at a time when it is not very busy as you have to hook it up to an amp to use it. Any truth to that? Why do you need to? Would I be able to run it like this? Sound card line in --> MXR 10-Band EQ --> Sansamp RPM/RBI --> Bass Big Muff --> BOSS ODB-3 --> Digitech Whammy..for example. I probably wont use the Big Muff or ODB-3 with it, but it'll be in the chain since they're there anyways. Thank you for the assistance!