TREB: Adjusts the level of the treble shelving filter. This is an active control and so it has far more range than passive devices, but the action is tight enough such that it never sounds harsh or shrill. Setting this knob to noon removes it from the EQ.
VOL: Makes more loud.
MID: Adjusts the level of the midrange. This is a relatively low-Q (“low” in these terms means wide-band filter width), for a broad mids adjustment that is never overpowering in any position. Setting this knob to noon removes it from the EQ.

BASS: Adjusts the level of the bass shelving filter. As an active control, it has a much wider range without making things muddy or flubby. Setting this knob to noon removes it from the EQ.
GAIN: Adjusts the amount of pre-EQ gain on tap. Rolling this knob fully counterclockwise removes almost all of the gain from the circuit, allowing the Silver Kiss to be used as a clean boost.
The Silver Kiss accepts anything between 9V and 18V with a center-negative DC power supply. Plugging in anything other than this (center-positive, AC, higher voltage, etc.) there’s a good chance that you can silver-kiss your Silver Kiss goodbye. Save yourself some time and headache and plug the correct adapter into the pedal the first time, otherwise you run the risk of voiding your warranty, and there’s no romance in failure.