The Warwick Fortress One bass was introduced in 1993, the second Warwick with a bolt-on neck following the Warwick Corvette model. It was the entry level Warwick model at the time and was available in 4 and 5 string configuration with a 3 piece flamed maple body, wenge neck and fingerboard. The Fortress neck was perhaps the widest of the Warwick models - at 45mm for the 4-string version it was comparable with a Fender Precision bass. The distinctive long upper horn body shape was designed to be perfectly balanced in the playing position. There was a choice of satin finishes: maple, black, honey, blue, green, violet and red.

The first version of the Fortress One was passive but the later version was active equipped with 2-band MEC electronics and MEC Gold active pickups. Controls were 1 Volume, 1 Balance and 2 tone controls (Bass and Treble).

Source: The Unofficial History of Warwick Bass. Max Novello and Bas Huygen.