EMG SPC and EXG Knobs: Hi Im James with EMG. I've got the SPC and EXG here in front of me. This are an absolute blast if youve never checked them out. If youre one of those guys who leaves their tone knob rolled all the way up yank those puppies out of there, drop these in what you've got is a mid boost and a fat control and then the direct opposite of mid skew that boosts the low and high end. Between these two and the same instrument, you can dial in virtually any kind of tone shape you're looking for. Absolutely worth checking out if you've got two extra knobs.