Conclusion: Lack of distortion and tight control over my low impedance 4-ohm RBH Sound 1266-LSEs really made a difference and quickly showed off the advantages of a high-quality amplifier. It should be noted when considering an amplifier upgrade from a receiver there are several dependent variable to consider: There's really no magic going on, you're simply getting what you pay for - good clean power. By my calculations, the 5-channel Rotel costs just over $26/pound.
Pros: Clean, dynamic power, High quality 5-way binding posts, Intelligent protection circuitry, Rear wheels for easier installation
Cons: Heavy, Requires an extra amp to do 7 channels