- two-piece select maple body, figured maple top, bolt-on maple neck, 24-fret rosewood fingerboard with dot inlays, two-per-side tuners, machined brass bridge, two EMG soapbar-style pickups, four knobs (MV, blend, b, t), active electronics,...
- similar to the Sonus RT4, except in five-string configuration with 3/2-per-side tuners, mfg. 2006-present.
- similar to the Sonus RT5 Five-String, except has a two-piece quilted maple body and ZB3 active electronics with a mid control, mfg. 2006 only.
- similar to the Sonus, except has a bookmatched bubinga top and two special multi-coil pickups, available in Natural polyester gloss finish, mfg. 1994-present.
- similar to Sonus Special, except in five-string configuration and 3/2-per-side tuners, current mfg.
- similar to the Sonus Special, except in six-string configuration and three-per-side tuners, current mfg.
- two-piece mahogany body, figured maple top, bolt-on neck, 24-fret Phenomwood fingerboard, two-per-side tuners, two Duncan soapbar pickups, four knobs, two mini switches, active electronics with controls for each pickup, chrome hardware, a...
- similar to the Sonus Studio, except in five-string configuration and 3/2-per-side tuners, mfg. 1999-present.
- similar to the Sonus Studio, except has 19mm string spacing, mfg. 2002-2011.
