Ibanez introduced the UV7 in 1990 as part of the Universe Series of Steve Vai 7-string models. For the first year this model had the Edge 7 tremolo but this was changed to the Lo-Pro Edge 7 in 1991. Pickups were DiMarzio Blaze II. The black finish and green pickups & controls match the 6-string JEM777V-BK. This model was replaced by the UV7S in 1997 with black pickups and controls.

The UV7 P was introduced in 1994

The IBANEZ UV77 was a 7-string Universe electric guitar made from 1990 until 1993 as part of the Ibanez Steve Vai Signature series. In the first year of production it had an Edge-7 tremolo, which was changed to a Lo-Pro Edge 7 in 1991.  It had no monkey-grip like the JEM models. This model featued on the front of the Passion and Warfare album. The production UV77MCs were swirled first in Japan. Steve Vai had agreed to only allow the guitars to be produced if they were swirled at the same place his prototypes were: About Time Designs.

The Ibanez UV777 is a seven string guitar with bound basswood body and bound quartersawn maple neck. The rosewood fingerboard has 24 frets with abalone disappearing pyramid fret marker inlays. The body has a mirror scratchplate and a "Light without Heat" pyramid inlay behind the bridge. Bridge is an Ibanez Lo-Pro Edge 7. Pickups are DiMarzio Blazes, with humbuckers at neck and bridge and a single coil in the middle. Volume and tone controls with a 5-position pickup selector switch.

The IBANEZ UV77RE was a limited edition reissued in 2010 to mark the  20th anniversary of the UV77 model.  Only 100 were made in total. The UV77RE necks were upgraded to 5 piece maple / bubinga (with volute) and have larger frets than the original UV77s, but have the original fingerboard extension with the last 2 frets overhanging the body. The rest of the UV77RE's specifications match the original. The neckplates are blank, and unnumbered. The UV77RE is finished in multicolored swirl and each finish is unique.