Steve Meade Designs SMD DD-1 Distortion Detector

Great product. Easy to use, little expensive for the 5 minutes it takes to set gains but can’t complain when your spending $1000s on speakers.

Worked great with my cadence q5000 amp and pioneer 4 way 80 rms speakers. A bit expensive but fantastic technology that will last forever

The DD-1 is fantastic for tuning your system properly. A lot of people just tune by ear, but this lets you tune for real quality, everything is accurate and clean. I tuned my setup with it, and my subs still hit hard, so you don’t lose any punch while getting everything perfectly dialed in. Minimal hassle, maximum results.

I'm not a professional sterio installer, but I can now turn volume all the way up and there is only good sound coming out...I wish it had alligator clips to connect to speaker wires instead of output of amp which is sometime difficult to access FYI, there was a $72.09 custom/duty charge

I have installed a number of systems in my cars in the past and most of them have resulted in distortion or the system not sounding decent. After using this on my most recent install with a Kenwood excelon 901 amplifier, I have to say it is probably the best system I have ever heard or installed. With this tool I was able to tune my system perfectly. Without it it would have just resulted in another system that was sub par. I cannot emphasize enough that this is the tool for every audio installation in the car. If you're on the fence go ahead and get this thing because it produces amazing results.