Gibson USA BAMSG4CH1 Midtown Signature Bass 2014 4-String Bass Guitar - Graphite Pearly The current Midtown Signature Bass has a chambered mahogany back with maple top and Mahogany neck and is also 34 scale length. The Fingerboard is Rosewood with Trapezoid inlays with the 120th Anniversary Logo on the 12th fret. It also has the chrome three point adjustable bridge and grover shamrock style tuners. Pickups on the Midtown Signature Bass are the full sounding T-Bird Plus and Vintage Style T-Bird Mini.