Neck-thru
custom 12th fret Spector inlay; Luminlay Side Dots
| Construction | Neck-thru |
| Body | Maple, Poplar Burl |
| Neck | 3-Piece Maple |
| Fingerboard | Rosewood |
| Neck Pickup | Aguilar AG-P |
| Bridge Pickup | Aguilar AG-J-HC |
| Controls | Bridge Volume, Neck Volume, Bass Cut/Boost, Treble Cut/Boost |
| Bridge | Hi-Mass Locking Bridge with Intonation Screws |
Artists documented playing the Spector NS Ethos 4: Paco Ayala.