How do you replace the best multifunction LOC and line driver on the market? That was the question our product development team was tasked with. It is even more challenging when you are actually replacing 3 models with 1. We took the best features of the linkD, the linkQ and the bassFREQ, and combined them. Welcome to the linkDQ. The linkDQ has the same class leading LOC and line driver that are the core DNA of all Wavtech products. The linkDQ features an adjustable parametric EQ with narrow or wide range selection, allowing corrections to any low frequency deficiency that may be present in a factory audio system. It features auto turn-on via DC-offset or Audio Signal Detect, either of which can be easily defeated by the convenient jumpers on the end panel. We have also added an RJ45 port for easily upgrading to a remote level control (sold separately). This allows for fine tuning the systems bass output from the front of the vehicle.