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BSG / Custom GJ45F Koa 12 String / Guitar For Sale

BSG guitars by Jan Stovicek are fastly gaining world fame for the excelling tone quality and most impressive detailed quality workmanship. Jan and his small team only make a maximum of 200 guitars a year, and maintaining the highest quality is absolutely his main perspective. The sheer overwhelming power and the subtle brilliance, perfect balance with a powerful deep bass but equally powerful mids and strong trebles  make you wonder how this is possible at this price level. The GJ or Grand Jumbo, is also sometimes called 'Super Jumbo'. The larger body of this model enhances and widens its tone spectrum and adds color to lower tones. This GJ45F features truly spectacular flamed Hawaiian koa back and sides, matched to a Hawaiian koa top. The body is bound with a rosewood binding and also features an abalone rosette. Tonally it's truly amazing and brings out the best of koa. It's not 'thin' in the bass like many other koa guitars, it projects with strong mids, strong bass response, and bell like trebles, it's very open with the warmness typical for koa. When strummed it boasts the projection and tonal clarity BSG is known for, while still maintaining significant warmth on the bottom end. Specifications Body Shape: Grand Jumbo Finish: Natural Dimensions: Width: 420 mm - 16.53" Depth: 120 mm - 4.72" Body Material: Solid Flamed Koa Top Material: Solid Flamed Koa Bracing: Scalloped X-Bracing Body Details: Abalone Rosette, Rosewood Binding, Black/Maple Purfling Neck Material: Mahogany Neck Profile: C Fingerboard Material: Ebony Fingerboard Radius: 16" Neck Details: Koa Headstock Overlay, Black Headstock Binding Nutwidth: 48 mm - 1.89" Scale Length: 648 mm - 25.5" String spacing: 64 mm - 2.52" Bridge: Ebony Tuners: Gotoh Closed Back Pickup: N/A Condition: New Tech Notes: N/A Travels in: Hiscox Hardshell Case Accessories: TFOA Passport

The Fellowship Of Acoustics, Netherlands  

Contact name:
The Fellowship of Acoustics
Martin, Gibson, Fender, Vintage Guitars, Santa Cruz, PRS, Collings, Rozawood, etc..
English, Dutch and German
Fine, Vintage and Rare Guitars
Opening hours:
Monday - Saturday: 10am - 6pm.


I have always been opposed to being trapped into a job eight hours a day to purchase the free time to do what I enjoy. That’s why i started the Fellowship of Acoustics. The fellowship of acoustics was founded by Rudi Bults, Guitarist and obsessed with tone and wood. The idea was offering real expertise when trading and selling the finest instruments in the world from our showroom in Bergentheim, Netherlands. Helping others find the right tools and enjoying an atmosphere that’s unhurried, honest and informative that’s my go. We are nothing like the "supermarket" style music stores, but specialize in string-things only. We are widely known for Flattop guitars but also sell electric, mandolins & banjo’s, amps, parts, and accessories. Our store has earned the reputation for being a great place to shop for the best products and service.
It is our hope that this new website - much more than a list of "gear" for sale - will serve as an example of our commitment to offering a more personal approach, a friendly atmosphere, and an ultimately more satisfying experience for our friends and customers.
If you have any questions just dial +31-523-232205 or e-mail My name is Rudi Bults, and I’m always here to help out. Wherever possible, we would recommend that you visit our store and experience our instruments and service first hand. However, because of our high standards you can be confident of ordering online from us. We hope you enjoy your visit to our site, and welcome your feedback.


We do speak English, Dutch and German! Feel free to call in any of these languages and ask your questions! Call 0031-523-232205




We LOVE Guitars, and buy and trade for most stringed instruments. But we also do consignment, make appraisals for insurance or put you on our watch list. Please check the Buying & Trading page for details.
The Fellowship of Acoustics BV
Kanaalweg oost 36
7691CE Bergentheim
To order online: go to
And choose your Guitar and purchase through the website.

Available methods of payment
# Paypal
# Credit Card (MasterCard/Visa/AmEx) only available for European Community and USA.
# Bank-Wire transfer

Call for Online Order+31(0)523-23-2205
our policy:
14 day money in return return warranty  Shipping cost, and Customs & import return costs -bothways- are buyers responsibility
1 year Guarantee on Used Guitars
5 years Guarantee on New guitars (or 'limited lifitime' if the Builder guarrantees such)

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