First thing I have to say is you have a great girlfriend for getting you a DD1. My wife was mad because I bought for myself before she could buy it for me.
Second, great tool. Today I set my amps in my 350z and tomorrow I am setting my truck.
Bass28, if you have a system that needs setting this is the easy way to do it. The instructions are easy to follow. Takes math out of trying to make sure your voltages are right and your not pumping distorted sound to your speakers.