Glenn and Barbara Nelson build guitars, banjos, and mandolins in Berlin, Mass. Here is Glenn's MIDI-ready G-10 synth mandolin, featuring a chambered mahogany body, quilted maple top, mahogany neck with ebony fretboard, and abalone inlay. Tailpiece, bridge, and knobs are Brazilian rosewood. In addition to the twin humbuckers with coil splitting, there are RMC pickups and electronics, along with a 13-pin MIDI connector.