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The Kala U-BASS is truly a ground breaking short scale bass that produces the same pitches as a standard bass instrument and is tuned in traditional bass tuning, E-A-D-G. The U-BASS is strung with proprietary strings that incorporate a great bass feel with balanced tension. The U-BASS is a true pleasure to play, and the tone that these instruments produce is amazing. The Kala Rumbler is the latest model in Kala Brand’s distinctive line of award winning portable U-BASS instruments. The Rumbler takes the U-BASS into a new dimension with the addition of custom engineered electronics and new proprietary strings, at an economically friendly price. The Rumbler design integrates a specially designed Kala electronic system with a Piezo pickup and is equipped with an active EQ with built in tuner. Each bass is strung with Kala Silver Rumbler Strings which are proprietary U-BASS strings designed and manufactured exclusively for Kala Brand Music by Aquila strings. The Rumbler U-BASS retails at a pocket friendly price, and includes a padded gig bag. Other features include Die-Cast U-Bass tuners, Laminate Mahogany construction, Mahogany neck with Rosewood fingerboard and bridge. Features: -Laminate Mahogany back and sides -Mahogany neck -Rosewood fingerboard and bridge -16 frets -21 inch scale -Custom Die Cast Tuners -Kala Silver Rumbler Strings -Custom Kala inlay -Kala electronic system with an active EQ and built in tuner -Includes a Deluxe Custom U-Bass Embroidered Logo Gig Bag -Meets most airline carry-on requirements -Set-up by Kala in the USA