4-string · Bolt-on
First-generation Specimen aluminum bass, originating with the band Tar's 1992 commissions. Aluminum body, bolt-on curly maple neck, ebony board, split P-bass pickups, Badass bridge — distinct from the later Aluminum Jazz Bass (P vs J pickups). Hand-built in Chicago; commission pricing. String count not stated — 4 inferred (P-style).
| Construction | Bolt-on |
| Strings | 4 |
| Body | Aluminum |
| Neck | Bolt-on curly maple |
| Fingerboard | Ebony |
| Neck Pickup | Split single-coil (P) |
| Controls | Volume, tone |
| Bridge | Badass |
| Made In | USA (Chicago, IL) |