The first Universe Series model to feature a multi-scale design![Bacchus Universe Series]

The WJB-1MS-DX-AC RSM/M and WJB-5-1MS-DX-AC RSM/M from the Bacchus Universe Series will be unveiled at this year’s Special Showcase. These new models represent a fresh offering from the Universe Series, incorporating the first-ever multi-scale design for Bacchus while blending the specifications of the “DX” models, such as stainless steel frets and a heel-less cut.
WJB-1MS-DX-AC RSM/M、WJB5-1MS-DX-AC RSM/M
Design Incorporating Multiscale Approaches

As the name “multi-scale” suggests, this refers to the use of multiple scales within a single model. While standard basses typically have a uniform scale length across all strings, this model features a 34-inch scale on the first string, with the scale length gradually increasing toward the lower strings, culminating in a 35-inch scale on the lowest string.

This creates firmer tension on the lower strings, improving stability when fretting. On the 4th string, this allows you to play while maintaining just the right amount of tension, even when using drop tunings like Drop D, and on the 5th string, it ensures stability for the low B note.
On this bass, the scale length of the high-string side is set to 34 inches, the same as a standard bass, to ensure consistent string tension throughout. Additionally, the design maintains a look similar to that of a traditional bass so that even players accustomed to standard basses can play it without feeling out of place.
These features make it a reliable choice as an entry-level multi-scale bass.
Active Specification

This model features an active design to accommodate a wide range of sound-shaping needs. Controls include volume, a balancer, and a 2-band EQ; the EQ allows you to adjust the treble and bass ranges, enabling you to tailor your tone to your genre and playing style.
Equipped with a single-string bridge



To accommodate the multi-scale design, the guitar features a single-string bridge that allows for individual scale length adjustment on each string. This independent bridge design strikes a balance between string tension and playability.
Standard Features of the “DX” Model
Standard features of the “DX” series include a heel-less cut and stainless steel frets. The heel-less cut allows for smooth fingering even when playing in the higher frets. Stainless steel frets offer greater wear resistance than standard nickel frets and produce a clear, well-defined tone.
Roasted Maple Neck & Fretboard
Roasted maple is a material created by heating maple wood at high temperatures to remove moisture and oils, mimicking the appearance of wood that has aged over time. It is highly resistant to warping and twisting, and when used for the neck, it provides not only stability but also a rich, natural resonance and a vintage, well-seasoned tone.
Available in a variety of colors!
In preparation for the Special Showcase event, we are currently preparing a lineup that includes several colors in addition to those listed above. We invite you to see the full selection on the day of the showcase.
Countdown Page
The special website for the “Deviser Special Showcase 2026”, launching at 6:00 PM on Friday, May 22, will feature over 200 limited-edition models and new products. Until the event begins, we are releasing teaser information about the products on the preview page below.

Preview at Sound Messe
It has been announced that some of the models to be unveiled at the major trade show will make their debut at “Sound Messe in Osaka 2026”, taking place in Osaka on May 16 and 17!

Following the preview at Sound Messe, detailed specifications and pricing for each model will be made available to the public on the special “Deviser Special Showcase” website, scheduled to go live on Friday, May 22, at 6:00 PM.



