Bacchus JT WL4-QM RSM/M AMBS

Essential Information About the Bacchus JT WL4-QM RSM/M AMBS Bass

• Premium Look: Quilted maple top with an Amber Brust Satin open-pore finish for an elegant and lively appearance.


• Stability and Precision: Torrified maple neck and fingerboard (RSM) for a consistent feel and improved longevity.


• Versatile "JB" Spirit: Original JB Set pickups with simple controls (2 volumes, 1 tone) to cover everything from vintage warmth to modern snap.


• Built-in Turbo Switch: Pull-up tone for extra presence and impact, ideal when you need to "cut through the mix."

Japan Tune-up: Bacchus Aesthetics, Ready to Play

This Bacchus belongs to the Japan Tune-up series, designed to deliver the brand's DNA with special attention to playability and setup. Made in Indonesia, it features modern lutherie choices such as torrified maple (neck and fingerboard) and an open-pore finish, offering a bass inspired by classic "Type S" models while maintaining a distinctive visual identity thanks to its quilted maple top.

For Which Bassist and Styles?

With its 4-string setup and TYPE S format, the JT WL4-QM RSM/M AMBS is suited both for the demanding beginner and the intermediate player seeking a unique, easy-to-handle, and effective bass for band settings. The long scale 34" / 864 mm provides familiar string tension and precise response, especially appreciated in pop, rock, funk, soul, indie, or for punchier fusion lines.

The 2 Vol controls allow fine blending of the two pickups (from the growl of the bridge pickup to the warmth of the neck pickup), while the Turbo Switch (pull-up) offers a quick option to boost presence during choruses, slap parts, or pick playing.

"JB" Sound: Attack, Definition, and Nuance

Equipped with an Original JB Set, this bass delivers the typical character of dual single-coil pickup configurations: a clear attack, precise midrange definition, and highly articulate highs. Adjusting the two volume controls lets you shift from a full, round tone (neck pickup dominant) to a more biting and focused sound (bridge pickup), with a very balanced middle ground perfect for expressive fingerstyle playing.

On the lutherie side, the natyoh body contributes to a stable and direct sound, while the quilted maple top enhances clarity and responsiveness. The torrified maple neck/fingerboard combo provides a fast playing feel and sharp attack, ideal for ghost notes, funk, and tight rhythms. Finally, the JB Bridge with brass saddles ensures efficient vibration transfer, delivering well-controlled lows and clear note articulation.

Recommended Compatible Accessories

To maintain the original setup, you can consider a replacement set of D'Addario XL-165 strings (factory-installed set). This is the safest choice to preserve the same feel, tension, and tonal balance intended for the instrument.

Technical specifications

Left handed	No	Nbr of strings	4
Strings	Steel

Category	Bass	Frets	Nickel Silver
Shape	TYPE S	Nut Material	PPS
Body Wood	Natyoh	Nut Width	38.0 mm / 1.50"
Top	Quilted maple	Bridge	JB Bridge with brass saddles
Top Color	AMBS	Tuners	OpenGear
Finish / Color	Amber Brust Satin	Pickups	Original JB Set
Finish	Open-pore	Functions / Controls	2 Vol, 1 Tone (pull-up \= Turbo Switch)
Neck Wood	Torrified maple	Series / Range	Japan Tune-up
Fingerboard	Torrified maple	Country of Origin	Indonesia
Scale Length	34" / 864 mm	Orientation	Right-handed
Radius	12" / 305 mm (305R)	Number of Strings	4
Number of Frets	21	Included Accessories	Gig bag, adjustment wrench