
Kala UBASS-RMBL-FS Rumbler Mahogany Acoustic-Electric U•BASS®
The Kala UBASS-RMBL-FS Rumbler is one of Kala’s most acclaimed ukuleles, designed for players who want deep, resonant bass tones in a portable, lightweight instrument. Crafted with a mahogany top, back, and sides, this U•BASS® delivers a warm and balanced tone with impressive projection. Featuring an elegant satin finish, black binding, and a rosewood fingerboard, it offers both visual appeal and exceptional playability. Equipped with Fishman U•BASS® EQ electronics, the Rumbler provides superior amplified sound for stage or studio. Whether you’re a professional bassist or a ukulele enthusiast, the Rumbler Mahogany U•BASS® is a versatile and reliable choice.
Key Features
- Mahogany body and neck – Produces warm, resonant bass tones with natural sustain.
- Satin finish with black binding – Adds a classic, elegant look.
- Fishman U•BASS® EQ electronics – Delivers professional-quality amplified sound.
- Rosewood fingerboard – Smooth playability and comfortable fretting.
- Silver Rumbler by Aquila® strings – Specially designed for powerful, bass-like tones.
- Custom black die-cast tuners – Offer precise and stable tuning.
- Lightweight and portable – Ideal for travel, practice, or live performance.
- Includes a padded gig bag – Protects your instrument on the go.
- Truss rod-equipped neck – Easy adjustments for perfect playability.
Specifications
- Top: Mahogany
- Back & Sides: Mahogany
- Binding: Black
- Neck: Mahogany
- Fingerboard: Rosewood
- Headstock: Standard
- Finish: Satin
- Nut: Graph Tech TUSQ®
- Saddle: Composite
- Tuners: Custom Black Die Cast
- Truss Rod: Yes
- Strings: Silver Rumbler by Aquila®
- Electronics: Fishman U•BASS® EQ
- Strap Button: Black x1
Measurements
- Scale Length: 20.375 inches
- Overall Instrument Length: 29.375 inches
- Body Length: 14.031 inches
- Number of Frets: 16
- Upper Bout Width: 7.75 inches
- Lower Bout Width: 10.25 inches
- Waist Width: 6.625 inches
- Body Depth: 3.25 inches
- Fingerboard Width at Nut: 1.75 inches
- Fingerboard Width at Neck/Body Joint: 2.125 inches
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Kala UBASS-RMBL-FS Rumbler is one of Kala’s most acclaimed ukuleles, designed for players who want deep, resonant bass tones in a portable, lightweight instrument. Crafted with a mahogany top, back, and sides, this U•BASS® delivers a warm and balanced tone with impressive projection. Featuring an elegant satin finish, black binding, and a rosewood fingerboard, it offers both visual appeal and exceptional playability. Equipped with Fishman U•BASS® EQ electronics, the Rumbler provides superior amplified sound for stage or studio. Whether you’re a professional bassist or a ukulele enthusiast, the Rumbler Mahogany U•BASS® is a versatile and reliable choice.
Key Features
- Mahogany body and neck – Produces warm, resonant bass tones with natural sustain.
- Satin finish with black binding – Adds a classic, elegant look.
- Fishman U•BASS® EQ electronics – Delivers professional-quality amplified sound.
- Rosewood fingerboard – Smooth playability and comfortable fretting.
- Silver Rumbler by Aquila® strings – Specially designed for powerful, bass-like tones.
- Custom black die-cast tuners – Offer precise and stable tuning.
- Lightweight and portable – Ideal for travel, practice, or live performance.
- Includes a padded gig bag – Protects your instrument on the go.
- Truss rod-equipped neck – Easy adjustments for perfect playability.
Specifications
- Top: Mahogany
- Back & Sides: Mahogany
- Binding: Black
- Neck: Mahogany
- Fingerboard: Rosewood
- Headstock: Standard
- Finish: Satin
- Nut: Graph Tech TUSQ®
- Saddle: Composite
- Tuners: Custom Black Die Cast
- Truss Rod: Yes
- Strings: Silver Rumbler by Aquila®
- Electronics: Fishman U•BASS® EQ
- Strap Button: Black x1
Measurements
- Scale Length: 20.375 inches
- Overall Instrument Length: 29.375 inches
- Body Length: 14.031 inches
- Number of Frets: 16
- Upper Bout Width: 7.75 inches
- Lower Bout Width: 10.25 inches
- Waist Width: 6.625 inches
- Body Depth: 3.25 inches
- Fingerboard Width at Nut: 1.75 inches
- Fingerboard Width at Neck/Body Joint: 2.125 inches





















