The Semod includes the 12VDC power harness and smoked dust cover with holographic Hlabs logo which is held in place with thumb screws but allows user to select the pink noise generator without removing the cover. For home use, most any 12 volt DC 100 ma. "wall wart" or other power supply will work fine with the trigger wire tied to the power wire. Two RCA inputs will handle up to 2.5 volts RMS and up to 10 volts RMS and higher using Hlabs attenuators.  The adjustable level pink noise generator makes it simple to set up the sliders by ear or using a sound pressure meter. There are 8 LEDs (one for each slider) that light when 20 db of head room remains and are useful for calibration and setting the two input sensitivity pots. The sliders select center frequencies of 20, 25, 31.5, 40, 50, 62.5, 80, and 100hz. This low frequency EQ also functions as a sub-sonic and a low pass filter by means of the slider ranges. 