What kind of humbucker is on Lindsey's guitar?

[seteca]

Hey no problem, and don't call it "stupidity", call it (the very best kind of!!) curiosity!!

EMG is the name of a company that specialises in pickups.

"Active" pickups are the opposite of "passive" pickups.

Passive pickups use a magnetic source of energy and relatively large coils of wire to generate their signal.

Active pickups use smaller coils of wire and have a preamp built into the pickup to boost the signal. Their advantage is that the smaller coils make them far less susceptible to outside interference and as a result they are very quiet. Also, with active pickups the output and EQ of the pickup can be changed and shaped by changing the parameters of the preamp. All active pickups operate off of a battery (usually a 9V) to power the preamp.

Some guitarists feel that passive guitar pickups have a more organic tone and a wider dynamic range. They're cheaper and easier to build so most guitars come with passive pickups.

The EMG DG-20 set has pickups with Alnico magnets which give a full round tone with an exceptionally strong midrange.

The EXG "Guitar Expander" circuit increases the bass and treble while reducing the mids (to whatever extent you like)...kinda like a "V-shape" on a digital graphic EQ display. The SPC is used to boost the mids, so for solos you can use the SPC along with the bridge pickup to have one hell of a screaming guitar.