I owned one from the same era for at least 5 years. It was an 8 string with a more standard looking body style. I sold it when I got a Washburn 8 that I liked more.
Plusses: Solid construction, good passive pickups, plenty of singing high end off those octaves, woods looked nice even if the finish was too thick, could be a lethal weapon, fair to middling range of tones but not as good as the active Washburn for my uses
Minuses: My hands did not like the aluminum neck (ouchies), a little neck heavy and heavy in general, string spacing a little close for me over the neck, octaves spaced close to bass strings=easy to finger but somewhat easy to overplay causing octaves and bass strings to collide and make weird sounds, hard to play just the octave or bass string alone (most coursed 8s are not great this way but this was worse than others), very little feel of wood to the instrument
The aluminum necks have sometimes been know to bow over time though I heard that they can be straightened. Don't know who does this or how it is done. I owned 3 different aluminum necked Kramers. I liked them all but my hands didn't do well on those aluminum necks.
Peace,
S