Recently bought one of these for my Spirit by Steinberger GT Pro. I decided to ditch the stock pickups, which were OK, but I thought I'd try a nice set of Zakk Wylde EMG 81 & 85 set. I used the Spirits' middle pickup as the "battery holder" by putting a blank stratocaster pickup cover over the battery. I needed a 3 way switch for the 81 & 85, so for ease of installation and it's "plug 'n play" ability, I bought this EMG switch. Sturdy, solid and reliable!