Jackson usually plays bass by using his fingers, but he has used a pick on many of Queensrÿche's studio recordings. When asked about this in an interview, Jackson explained, "[On] the EP I recorded with fingers. Rage for Order, Operation: Mindcrime, Empire, Promised Land, Hear in the Now Frontier--those were all with a pick. The albums after that like Q2K and Tribe were a combination of both pick and fingers. But my comfort zone is using fingers especially live, aside from the intro to "Jet City Woman". I've been so locked into using fingers that it's much easier for me to play. You're definitely going to get a different sound and tone and sometimes it's whatever the song calls for."[6]
Jackson endorsed Kramer basses during the mid-1980s, until Kramer bought out Spector. The NS-2s were his primary bass guitars throughout the late 1980s and into the 1990s, and were among others used on Operation: Livecrime, until his black Spector was stolen in the mid-'90s,[7] after which Jackson retired his white model from touring, and switched to using Spector's Euro 5LX and ReBop bass guitars. Jackson briefly endorsed Fernandes basses from 1994 to 1996, during Queensrÿche's Promised Landtour,[8] before endorsing Bellevue-based master luthier Michael Lull, who had done all of the repair and upkeep work on Queensrÿche's guitars. He also used a rackmount Line 6 Bass Pod Pro at some point as well in the late 90's and early 2000's.
Jackson specifically uses the following bass guitars and amplifiers:[9]
Mike Lull M4V "Modern/Vintage" 4-string in black with active EMG Jazz Bass-style pickups, preamp and Hipshot Bass Xtender.
Mike Lull M5V "Modern/Vintage" custom 5-string in black, rear-routed with no pickguard, custom Seymour Duncan Bassline Jazz Bass-style pickups and Bartolini preamp.
Mike Lull M5V "Modern/Vintage" 5-string in sunburst with custom Seymour Duncan Bassline Jazz Bass-style pickups and Bartolini preamp.
