AN IDEAL CHOICE FOR SMOOTH JAZZ ENTHUSIASTS! This model is designed for an acoustic sound. It aims to reproduce the rich resonance and upright bass tones from chambered bodies. It's an excellent choice for those pursuing unplugged or smooth jazz music. MARCUS ACOUSTIC BASS BODY! Sire GB5's body is made up of Mahogany with Solid Spruce top giving the acoustic aesthetic vibes, and connected to a 3-piece Mahogany neck with Rosewood fretboard for easier glide. VIVIDX-B PREAMP! It is a more typical preamp for an acoustic bass. It features a Piezo pickup under the saddle, a 3 band EQ (Treble, Middle, Bass), and a phase switch allowing players to adjust the sound to their preference. SIRE ACOUSTIC BASS NECK! It is a C-shape Edgeless™ neck made up of a 3-pc Mahogany with Rosewood fingerboard for maximum playability. Also available in fretless variant.