The PCBE12OPN is Grand Concert body style acoustic/electric bass with Spruce top, Okoume back and sides for a warm, full tone. While the Open Pore Natural finish enhances the instrument’s natural beauty, it also contributes to the sound quality. Thick, heavy finishes can impede the vibration of a guitar’s body, “choking” the instruments tone and projection. The lightly applied natural Open Pore finish optimizes sound vibration and allows the bass to realize it’s full sound potential. The Ibanez AEQ -2T preamp is specifically set to tailor the frequencies of a bass and allows operation of the built-in tuner without the instrument being plugged in. The PCBE12OPN also features a tortouse rosette, chrome die-cast tuners, Laurel fretboard and bridge, with Ibanez Advantage bridge pins for improved tuning stability. Features 4 String Acoustic Bass Guitar - Recommended to fit case IABB540-BK Spruce Top with Okoume Back and Sides in a Open Pore Finish PCBE Neck Type. Maple neck with Open Pore finish - Dovetail 15th fret joint Ibanez Under Saddle Pickup with Tuner on/off switch Specifications Brand Series: PERFORMANCE SERIES Origin: INDONESIA Strings: 4 Strings: Colour Filter: Open Pore Natural Finish: Open Pore Finish Inlay: White dot inlay Body, Back, & Sides: Okoume Back and Sides Acoustic Preamp: Ibanez AEQ-2T preamp with onboard tuner Pickups: Ibanez Under Saddle Pickup Controls: Tuner on/off switch Scale: 32 inch Scale: Fretboard: Laurel fretboard with 20 frets Top: Spruce Top Acoustic Soundhole, Binding And Bracing: Tortoiseshell Soundhole Rosette String Gauges (Top To Bottom): .040/.060/.075/.095 Tuning (Top To Bottom): 1G,2D,3A,4E Case Inclusion / Recommendation: Recommended to fit case IABB540-BK Other Items Included: Hex wrench, Saddle, Bridge pin