Jackson has brought key updates to Iron Maiden guitarist Adrian Smith’s new San Dimas SD and SDM signature models. The physical demands of Smith’s fast and melodic fretwork in Iron Maiden forced Jackson to outfit the signature San Dimas models with a bevy of customizations and mods. Each took into account Smith’s style of playing and even Iron Maiden’s “relentless touring regimen.” The guitar is not only customized to Smith’s technical abilities, but his lifestyle as a busy, traveling musician. Both the SD and SDM models tout lightweight alder bodies and bolt-on maple necks, which feature a hand-rubbed urethane back finish that looks decadent and makes for fluid playability. The neck is also supported by a pair of graphite-reinforcement truss rods that “refuse to budge, no matter the envir...