SK10

You can see it as Low End Enhancer, and it does its job quite well. Throw it on some trap beats and it will deliver.

Contains a dry/wet "mix" knob to deal in the right amount of sub, a "lowpass" parameter to control the cutoff point to the higher frequencies, and a "output" knob to control the output gain.

I don't think you necessarily need a parameter to control the pitch, like the other reviewer stated. Other paid Subbass enhancer also do not have pitch controls available as the plugin however responses to the lowest dominant frequency in the input signal.