The DT155 features an Explorer-style basswood body with birch top and ivory binding mated to a set-in 1-ply maple neck with a 21-fret ebony fingerboard with pearloid and abalone split block position markers. Components include a trio of Ibanez Super 70 humbucking pickups, Tek Grip knobs and Smooth Tuner II machine heads.
In mid 1983 a 22nd fret was added.
The DT555 is a similar, more expensive model with different components.
Although the DT155 was not officially designated as a signature model it has been closely associated with Def Leppard guitarist Phil Collen. Collen appeared with the guitar in Ibanez catalogs and promotional materials.