You could purchase the amp at circuit city. Obviously you'll find a little better price online, I bought mine there years ago as I was concerned about warranty issues. Never came into play as it has been bulletproof since the day I purchased it and has seen duty in 3 different cars. It's just a simple 4 channel amp (35x4 RMS I believe). These power ratings are quite conservative, and amp power is an entirely different beast than deck power. The MRVT357 may have been replaced by a new model (these things evolve so quickly), but your general Alpine V12 is still an excellent choice. Please keep in mind there is way better stuff out there, I just think you'll be hard pressed to find something that performs like this at the price point. As for installation, I would check out Tweeter (Douglas TV, United Audio, etc.). They are the best of the national chain stores in terms of professionalism and attention to detail in an installation. Your local stereo shop would probably be an even better choice. Stay away from Best Buy and other discounters for installation. Although they get the job done, it never looks as nice, they use cheaper wiring and sometimes (I've seen this!) they use twist on connectors rather than actually soldering a wire and using shrink tubing.