The Anthem system (as seen on my Shorty in the pics in the classified section, I know I'm shameless
) the controls are also in the sound hole. But unlike many passive systems the pre amp is in the 1/4 jack and the battery sits inside the guitar. All can be removed if need be with no damage to the guitar. It's an under saddle pickup and a separate microphone. It sounds very natural. You can blend saddle and microphone to your liking. Best of both worlds. No affiliation with lr Baggs. Just my opinion.