How experienced in audio setup and installation are you? Reason I ask is because the MiniDSP isn't as plug-n-play as a car audio specific processor. Last I knew there are some specific considerations to installing a MiniDSP in a car environment, such as it not being properly isolated so without the correct installation there was a high risk of noise and such. If this is your first go-round with active and you are less experienced with electronics in general, it's probably not a great first processor. The initial cost of the MiniDSP appears low, but by the time you factor everything in cost wise (casing, isolation, etc) it ends up being pretty equivalent in cost to a lot of used car audio specific processors. Also, I'm not sure if there is a time delay for the audio to route through the MiniDSP's processing. If there is, then in order to run a 2-way active front stage + subwoofer you would need atleast 5 channels of processing so that all of the audio system was running through the processor, which means you would need either two 4-channels or the 8-channel. So, long story short.....depending on your experience and skill level, you very well may be better off to look at car audio specific products.