Ian Hill

As seen in this article by Bassplayer, Ian Hill uses his signature Spector Euro 4LX.

In this photo Hill can be seen playing a Fender Jazz Bass in a sunburst finish.

He owned a Gibson EB-3 in his early days

Played a Bass model of Glen Tipton's guitar between 1984 and 1988 both in single and double handle

He used to play with a Hamer Double Neck Bass in the "TURBO" back in 1986

Also uses a 5 string version of his Spector Euro

As seen in this article by bassplayer.com, Ian Hill uses a SWR Classic Series SM-1500.

From his rig rundown:

The Boss ME-50B multi effects gets work during "Green Manalishi"

From his rig rundown:

Ian Hill runs a Shure AD1 wireless transmitter to a Mike Hill Services 4-way input selector that feeds this Moog Taurus 3 which is used to add drama and bottom end on certain songs.