4-string · Bolt-on · hollow-body
hollow body. Fretted version of the MB-2. Same 34-inch semi-hollow platform and voice, with a slightly quicker attack — the maker recommends it for players using chords and double stops. 1-5/8" nut, .750" bridge spacing, Hipshot Ultralite tuners, La Bella 760N tapewounds. Around 6.5 lbs. Rob Allen builds to order and publishes no list price; no new stock of this model was listed at the time of writing. Comparable models run roughly $4,400–$5,500. Handbuilt in Fillmore, California.
| Construction | Bolt-on |
| Strings | 4 |
| Body | Alder with walnut or koa top |
| Neck | Black walnut or mahogany |
| Fingerboard | Indian rosewood |
| Neck Pickup | Fishman piezo (under-saddle) |
| Controls | Volume integrated into the bridge; passive high-trim tone in the rear cavity |
| Bridge | Rob Allen wooden bridge with integrated volume |
| Made In | United States |