In the video, Bass Direct pits the Kala uBass Rumbler Mahogany, the Kala Spruce Fretless uBass and the Kala uBass Mahogany Fretless (with both Pahoehoe and Pyramid strings) against the Tanglewood Roadster Travel Bass Fretless, the Countryman Ukulele Bass Fretless, the Aquila Short Bass One Basic Fretless.
Which one sounds the best? Watch the video and decide for yourself. I will say that they all sound good, though I think the Kala uBasses sound more focused and refined. Except the Mahogany Fretless with the Pyramid strings. That one sounds horrible. And it’s not the uBass, it’s the Pyramid strings and the lackluster playing. Among the competitors, I think the Tanglewood sounds the best.
Though, to be fair, the Countryman and the Short Bass One have horrible setups (with string buzzes everywhere), so they don’t sound their best in this clip. Interestingly, the Short Bass One–which looks to have the largest body of all the uBasses–is the quietest. It does not project sound very well.
While it may not be a very “scientific” test of all the uBasses, this video will give you an idea of what they all sound like.