The RF 3sixty.3 processor is by far the best money can buy!! This thing is amazing!! Gives you the ability to tune every speaker in your vehicle to the exact freq you want. Also, if you have the money to buy the mics for the RTA ( real time analyzer) it will allow and even better end result. The knob is simple and to the point to change your different presets and whatever custom options you have chosen. I personally still am learning everything on the product, but I'm very pleased in every aspect of it. It will definitely take you a couple hours to tune your speakers though. So, just give yourself the adequate time to do so. Also, make sure you have a windows computer. It is not compatible with macs.
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