In 1984 Luke began working together with Bob Bradshaw. This was the beginning of an era where effects would be the dominant part of Luke's sound.
A lot of people regard Luke as one of the guitar players who pioneered with the "wide guitar sound".
Anyway, this was a period of experimenting (and not only with sound and gear).
Mike McGuire had customized his guitars since the beginning of Toto, but now Luke presented the two most famous Valley Arts guitars - the Red Sunburst and the Dark Blue Metallic with the sculls [click here for pictures: picture 1 picture 2] - both built to his exact specifications by Mike McGuire.
On the Red Sunburst the body was made of Quilted Maple, and the neck was Birdseye Maple with Ebony fingerboard.
The Dark Blue Metallic was made of Mahogany, and the neck was Maple with Rosewood fingerboard.
Both guitars has a distinct V-shape neck, similar to the old Fender Strats.
Also his collaboration with EMG expanded, and they made a single-coil pickup - the SA-57 - exclusively for Luke, which is a beefed-up SA.
He used a EMG 85 humbucker in the bridge position, and two SA-57 single-coils.
Both Valley Arts had one volume control, no tone control, and a Floyd Rose tailpiece and nut.
His system was now tranformed into a stereo system - utilizing two 180W Mesa/Boogie Mk. IIB heads.
The gain stage was a Mesa/Boogie Mk.III with dummy load - tranforming the signal to line level.
For chorus he used a CS-5 TriStereo Chorus made by Ditronics ; delays was created by two Roland SDE-3000 ; and his reverb was a MXR Ø1.
For doubling he used a Eventide H910, and present was also a couple of Ibanez effects for some harmonizing effects.
To sum all these effects (and the dry sound) he used a Rane SM-26 Splitter/Mixer.
He used two Mesa/Boogie 2x12" cabs with EV speakers.