Okay to be completely honest these were my first pair of after market speakers. I have an 8 speaker Bose system in my nissan and boy that sure sounds great, it has 4 6.5", 2 tweets, and 2 6x9". I thought that was pretty much top of the line but boy I was wrong I bought 2 sets of these clarions and BAM they are SO CRISPY! They even have a surprising amount of bass to them. In my opinion they need an after market amp, I listened to them off my 22wrms kenwood headunit and then later on a 4 channel (60wrms) per channel amp and it really amazed me. 8 speaker bose vs 4 clarions on jazz is an easy victory for clarion. Also easy to install with those little black clip things it comes with to screw into if the stock holes are too big.

This is an awesome pair of speakers!! Comes with all instalation hardware! Just installed them today along wit my Kenwood 6x9's makes an awesome duo!!! Bass is great, all the highs and mids/lows are great.