4-string · Bolt-on
Late-1970s solidbody bass (Magnum I/II) with unusual multi-coil pickups and onboard electronics incl. graphic EQ on the II.
| Construction | Bolt-on |
| Strings | 4 |
| Body | Mahogany (solid) |
| Neck | Mahogany |
| Fingerboard | Ebony |
| Neck Pickup | Four-coil humbucker |
| Bridge Pickup | U-shaped split pole-piece pickup |
| Controls | Per-pickup volume/tone, selector, mono+stereo outputs (Magnum II added graphic EQ) |
| Made In | USA |
Artists documented playing the Ovation Magnum: Barry Adamson, Charles Cave, Jah Wobble, Kim Gordon, Paul D'Amour, Roger Glover, Ross Valory, Ryan Sinn, Tony Levin.