B·2 Masterbuilt - Custom
Bass guitar, built to order in Michigan
- 5-year limited warranty
- Premium gig bag, setup tools and certificate of authenticity included
Description
The B·2 Masterbuilt is a custom 4-string bass by Belforti Instruments, built to order in Big Rapids, Michigan.
A modern evolution of the Jazz-style design, it combines compact ergonomics with professional-grade refinement.
Premium tonewoods and precision construction deliver a clear, dynamic sound with powerful lows, defined mids, and detailed highs.
Built as part of the Masterbuilt Series, it emphasizes superior materials, advanced craftsmanship, and expressive tone.
From its sculpted contours to its balanced resonance, every element of the B·2 Masterbuilt reflects Belforti’s commitment to performance, clarity, and design integrity.
A professional instrument for musicians who demand both feel and fidelity.
Core Features
These are the core features common to all Belforti Guitars and Basses :
- Founded in Paris, built in Michigan
- PLEK Treatment
- Rated Tonewoods
- Invisible Fret Tangs
- Radiused Fret Slots
- Angled Full Length Carbon Reinforcements
- Easy Truss Rod Access
- Selected Bone Nuts
- Handwound Pickups
- Matching Pickup Shells
- Optima 24KGold Strings
- Belforti x ABM Single Saddle Bridge
- Thin Frets
- UltraThin Polyurethane
Warranty
Every new Belforti instrument comes with a 5-year limited warranty from the date of delivery. It covers defects in materials and workmanship. Electronics, hardware and cases made by other manufacturers are covered for 90 days. Exclusions apply. Read the full warranty.
Delivery
Production Time
Between 6 and 8 months*If the instrument is in stock, shipping occurs within days.
Delivery
Orders are shipped from our workshop in Big Rapids, Michigan. For customers outside the United States, local import fees, duties and taxes will be applied based on your country's regulations.Guitars and large items benefit from fast, free* delivery via DHL Express with On Demand Delivery, allowing you to track and manage your shipment throughout its journey.
The B·2 Masterbuilt refines the versatility and fluidity of the Jazz-style concept into an instrument built for precision and expression.Compact yet commanding, it delivers an articulate voice and an unmistakably responsive feel — handcrafted with the precision that defines Belforti’s Masterbuilt Series.Every element, from body carve to fret finish, has been shaped for balance, comfort, and connection.
Masterbuilt Series Features
Master Grade Woods
With the Masterbuilt Series, you're stepping into the realm of master craftsmanship and exceptional wood quality. We source only the finest, master-grade woods that are known for their stunning visual appeal as well as their tonal excellence. These aren't just any pieces of timber; they are carefully selected for their aesthetic beauty, tonal richness, and resonance.
All the Master Grade woods are rated between 81 and 90 on the Belforti rating.
Complete Customization
You choose everything.
From core specs like number of strings & scale length down to side dots material, colors & string gauge.
Faux Pickguard
The faux pickguard gives the Masterbuilt Series their distinctive look. It maintains this classic look and brings coherence to the design, while preserving the grain pattern. It is made out of inlayed ebony.
We could never put a piece of plastic on these, not even transparent acrylic !
Master Grade Tops
Masterbuilt Series have a distinctive exotic wood top, that follows the curve of the armrest.You also have unrestricted access to our Master Grade Library for your guitar's top. Whether you're captivated by the intricate patterns of a Flamed Maple, the striking lines of a Zebrawood, or the deep hues of a Burled Walnut, your aesthetic vision can be fully realized.
Matching Premium Inlays
Masterbuilt Series fretboard and headstock inlays are exclusively made out of the top wood you chose. They are extracted from the scraps of your top, and they are outline with a black inlayed ebony outline.
So elegant !
Use the Belforti configurator to choose tonewoods, finish, electronics, and hardware.
Every specification is crafted to order in Belforti’s Michigan workshop.
We won't judge (at least not publicly)
THE BELFORTI CONFIGURATOR IS UNDER MAINTENANCE FOR GEN 2.0 - ERRORS MAY OCCUR
Electronics
Equipped with a set of Aguilar AG 5J-HOT* pickups, the B·2 Masterbuilt delivers a powerful interpretation of the classic J-voice — fuller lows, boosted mids, and clear, singing highs.
The elevated output maintains dynamic nuance without compression, offering punch and clarity for any musical context.
The passive layout preserves natural wood tone and dynamic feel, giving players total control through touch and technique.
It’s the familiar Jazz DNA, reimagined with authority.
*Standard Configuration - Other options are available in the configurator
Pickups
Standard : Aguilar AJ4 HOT (for 4 strings)
Wire: 42 gauge heavy Formvar wire
Magnets: 6mm Alnico V
Leads: Single conductor, heat resistant Teflon coated
*Other Options are available on the Configurator
Circuit
- Layout*
Dual Volume
Bass / Mid / Treble
Active / Passive
- Preamp
Aguilar OBP3
- Jack
Pure Tone Stereo
*Other Options are available on the Configurator
Technical Specs
4 Strings
Nut Width : 39mm
Width at Last Fret : 64mm
Fretboard Radius (3 Options)
Vintage 9"-12" / Balanced 10"-14" / Modern 12"-16"
Neck Profiles (5 Options)
Small / Medium / Large / 3D Nest™ / 3D Flow™
Scale Length (3 Options)
30" / 34" / 35"
Number of Frets : 24
String Spacing at Bridge : 18.5mm Equal Spacing
5 Strings
Nut Width : 45mm
Width at Last Fret : 76mm
Fretboard Radius (3 Options)
Vintage 9"-12" / Balanced 10"-14" / Modern 12"-16"
Neck Profiles (5 Options)
Small / Medium / Large / 3D Nest™ / 3D Flow™
Scale Length (3 Options)
30" / 34.5" / 35"
Number of Frets : 24
String Spacing at Bridge : 18.5mm Equal Spacing
6 Strings
Nut Width : 52mm
Width at Last Fret : 88mm
Fretboard Radius (3 Options)
Vintage 9"-12" / Balanced 10"-14" / Modern 12"-16"
Neck Profiles (5 Options)
Small / Medium / Large / 3D Nest™ / 3D Flow™
Scale Length (3 Options)
30" / 34" / 35"
Number of Frets : 24
String Spacing at Bridge : 18mm Equal Spacing
What's included
Your instrument
How surprising !
Belforti Premium Gig Bag
Your Belforti deserves proper protection. So it comes with a signature padded gig bag themed after the series you chose.
Sturdy, weather-proof, and oh so cool !
Setup Tools
Your instrument comes completely setup and ready to play. But you might wanna tweak things up a bit later on, so we got you covered !
Certificate of Authenticity
A real Belforti deserves a certificate. Can't fake this up
Past & Present Builds
Gallery
Discover previous or in stock instruments, find your dream build or inspiration for your custom project
