4-string · Neck-Through Body
Multi-laminate flame maple/walnut/maple/walnut/mahogany body, Nordstrand® SB4 single-coil soapbar bridge and neck pickups, 3-band active EQ, two-way toggle switch, Jackson Single-String hardtail bridge, Jackson sealed die-cast tuners and Dunlop® dual-locking strap buttons, Chlorine Burst with chrome hardware, unique 2x2 color matched headstock with an understated J logo, offset Spectra Bass body style with a larger upper horn for better balance and playability, through-body five-piece maple/walnut/maple/walnut/maple neck with graphite reinforcement, 12-16 compound radius caramelized jatoba fingerboard with 24 jumbo frets and oval dark pearl inlays, speed neck contour
| Construction | Neck-Through Body |
| Strings | 4 |
| Body | Multi-Laminate: Flame Maple/Walnut/Maple/Walnut/Mahogany |
| Neck | 5-Piece Maple/Walnut/Maple/Walnut/Maple |
| Fingerboard | Caramelized Jatoba |
| Neck Pickup | Nordstrand® SB4-N |
| Bridge Pickup | Nordstrand® SB4-B |
| Controls | Volume, Blend, 3-Band EQ (Active Only) |
| Bridge | Jackson® Single-String |
Artists documented playing the Jackson Pro Series Spectra Bass SBFM IV: Evan Seinfeld, Rick Savage.