Gold Tone M-BassFL/L Left-Handed 23-Inch Scale Fretless Acoustic-Electric MicroBass with Gig Bag

Here’s the original MicroBass that started a revolution—and the fretless version takes it to another level entirely. The Gold Tone M-BassFL delivers that smooth, singing upright bass tone that fretless players crave, all from an instrument you can toss in an overhead bin.

These fretless models are a genuine surprise, and just that much fun to play. Acoustically, it’s got enough voice to hold its own at a jam session or around a campfire. But plug it into an acoustic amp or bass amp, and you’re getting tones that genuinely rival an upright. The specially developed Aquila Thunderblack polymer strings are the secret sauce here—they’re easy on your fingers and produce that fundamental, woody bottom end that sits perfectly in a mix.

The M-BassFL features a nato mini-dreadnought cutaway body with a mahogany top and okoume back and sides. Gold Tone designed this one with players in mind: the arched back and comfort-beveled top mean you can play all night without fighting the instrument. The walnut fingerboard is silky smooth for those expressive slides and vibratos that make fretless playing so rewarding, and the dot markers help you stay oriented as you move up the neck.

The onboard UB-300T preamp gives you everything you need for amplified performance: volume control, bass and treble EQ sliders, and a built-in chromatic tuner that’s actually accurate and useful. The butterfly bass tuners hold pitch reliably, and the two-way adjustable truss rod means you can dial in your preferred action.

At 2.8 pounds and 23 inches of scale length, this is a legitimate gigging instrument that fits in spaces a full-size bass never could.

Includes Gold Tone’s padded MicroBass gig bag.

About the photos: these are Gold Tone’s own photographs of the M-BassFL — the fretless model listed here. The fingerboard you see is smooth, with position markers inlaid flush instead of frets. Gold Tone photographs the MicroBass line right-handed, so the instrument in the pictures is the right-handed build; the instrument you receive is the factory left-handed M-BassFL.

Why Buy From Banjo Warehouse

Banjo Warehouse is an authorized Gold Tone dealer, which means every instrument we sell comes with the full manufacturer warranty and you’re buying a genuine, new instrument — not a gray-market or diverted unit. Financing is available through PayPal Pay in 4 and 3, 6, 12, or 24-month plans, all with no late fees, plus Afterpay. Questions before you buy? Reach out — we’re happy to help.

Specifications:

Scale Length: 23″ Nut Width: 1-11/16″ (Bone) Neck: Nato with two-way adjustable truss rod Fingerboard: Walnut (fretless with 20 fret positions marked) Top: Mahogany Back & Sides: Okoume Bridge: Walnut Finish: Natural Satin Tuners: Butterfly bass-style with metal buttons Electronics: MBass preamp with EQ and chromatic tuner Strings: Aquila MicroBass Thunderblack rubber/polymer Weight: 2.8 lbs. Includes: Padded gig bag Optional: HDMI23 hardshell case

All Gold Tone instruments are set up in Titusville, FL, USA.