the Bunker, an artisanal five-string bass signed Gaetano Costanzo

Written on 12 January 2026 - 106 views

Bunker – An exceptional five-string bass signed Gaetano Costanzo

Designed by luthier Gaetano Costanzo, the Bunker is a five-string electric bass with a strong character, conceived to deliver power, precision, and top-tier tonal versatility. This instrument embodies a rigorous approach to artisanal luthiery, where every technical choice serves musicality, ergonomics, and reliability.

Luthiery focused on balance and efficiency

The alder body forms the sonic foundation of the Bunker. This wood is renowned for its balanced frequency response, offering solid lows, well-defined mids, and clear highs without harshness. It ensures excellent note definition, both in live performance and studio contexts.

The maple neck with rosewood fingerboard, featuring 24 frets and a 34” scale length, provides a playing feel that is both familiar and precise. Maple contributes attack and definition, while rosewood softens the response for a comfortable feel and warmer tone. Access to the upper registers is smooth, making the instrument equally effective for accompaniment and solo playing.

Artisanal electronics at the heart of versatility

The electronics, developed specifically for this instrument, offer a clear yet extremely comprehensive architecture:

• Neck pickup volume with active / passive push-pull, allowing instant switching from a modern, sculpted tone to a more organic and direct approach
• Bridge pickup volume
• Three-band active EQ: bass, mids, treble
• Two mini split switches, one per pickup, each offering three configurations:
• single coil
• humbucker
• dual single

This combination makes it possible to explore a wide tonal palette, ranging from round, deep sounds to highly defined and percussive textures, suitable for funk, modern jazz, as well as contemporary and progressive music styles.

Reliable hardware and refined design

The Gotoh tuners ensure excellent tuning stability, essential on a five-string bass. The custom-made bridge, designed specifically for the instrument, promotes optimal vibration transfer and enhances the sense of solidity and precision under the right hand.

A finish with a strong character

The red sunburst nitrocellulose finish gives the Bunker a strong and elegant visual identity. Thin and breathable, nitrocellulose allows the wood to vibrate freely and will evolve over time, giving the instrument a natural and unique patina.

Conclusion

The Bunker is an artisanal five-string bass intended for demanding musicians seeking a versatile, expressive, and reliable instrument. It reflects a coherent vision of modern luthiery, where careful attention to materials, electronics, and finishes results in an instrument with a true sonic identity and strong musical potential.

See you soon, here or elsewhere !

Chrys