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Rob Allen MB-2 Fretless

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Page last updated Aug 10, 2025

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The Rob Allen MB-2 Fretless is a masterful blend of acoustic elegance and electric versatility, designed for the discerning bassist who appreciates both tone and craftsmanship. This acoustic-electric bass guitar stands out with its handcrafted design, offering an unparalleled playing experience. Its fretless fingerboard allows for fluid, expressive playing, providing a rich and warm sound that is both resonant and articulate.

Built with attention to detail, the MB-2 features a unique hollow body construction that enhances its natural acoustic tone while maintaining a lightweight feel. The incorporation of a piezo pickup system ensures that every subtle nuance of your playing is captured and amplified with clarity and precision. Whether you're laying down a groove in a studio session or performing an intimate live set, this bass delivers consistently smooth and balanced tones.

With Rob Allen's commitment to quality and innovation, the MB-2 Fretless offers a distinctive voice that stands out in any musical context. Its sleek, minimalist design is complemented by high-quality components and a thoughtful layout that ensures comfortable playability and intuitive control. Perfect for jazz, fusion, or any genre that benefits from a fretless touch, this bass invites you to explore new musical landscapes.

Key Features:

Fretless fingerboard for expressive playing
Handcrafted hollow body design
Piezo pickup system for clear sound amplification
Lightweight for comfortable handling
Suitable for various musical styles and settings

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Peter Kastner

Peter Kastner plays a Rob Allen Mb-2

Peter Kastner

Jammin' with my Rob Allen MB-2 fretless | 05 String test - La Bella Black Nylon vs. White Nylon

Magnus Sjöquist

Rob Allen mb2 Fretless mb-2

Spwfcm

The Fretless Project Rob Allen MB2

Real Bass Lessons

SPAIN - my humble homage to the late great Chick Corea. Played on my Rob Allen MB-2 fretless bass

Bassist Bill Lawrence

The Bees Knees - Rob Allen MB-2 Fretless Bass

Bassist Bill Lawrence

Free Range Bass - Rob Allen MB-2 Fretless Bass

Bassist Bill Lawrence

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Critic Reviews

Bass of the Week: Rob Allen MB-2 – No Treble

notreble.com

The Rob Allen MB-2 Fretless bass stands out with its unique semi-hollow design, aiming to blend the warmth of an upright with the punch of an electric bass. Available in various wood combinations, it offers a resonant sound thanks to its minimal oil finish and high-quality components like Hipshot tuners and a Fishman Matrix piezo pickup. The craftsmanship allows for a lightweight build, enhancing playability. However, with prices starting at $2800, it might be a steep investment for some. Overall, it's highly regarded for its tonal qualities and construction, making it a dream bass for enthusiasts seeking that distinctive, organic sound.

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Colin Edwin

Bassist

Porcupine Tree

Verified via Colinedwin

Colin mentioned this bass in multiple interviews and in his blog and on his website

I first became aware of Rob Allen basses on a visit to the bass department of Rudy's in New York City some years ago. I was extremely close to laying out for a very nice four string version, when a moment of realisation struck me that, at that point, I simply didn't have the money. These basses are not mass produced so sometimes a little hard to find, and subsequent "cashed up" visits to Rudy's and also Bass Northwest, in Seattle (the only other place that seemed to stock them) left me with the choice of either five strings, lined fretboards or fretted versions, and not the unlined 4 string fretless that I was really after. Eventually, after some searching, I bought this five string second hand in the UK, and realising the rarity of them, I was happy to forego my usual preference for four strings. I have no idea why it never occurred to me to simply get one direct from the source….but in any case it's proved useful for me to have the low B on occasion.

http://colinedwin.blogspot.com/2015/05/basses-part-4-rob-allen-fretless.html http://www.colinedwin.co.uk/ http://www.fretlessbass.com/edwin-colin/ http://www.bassfrontiersmag.com/interview-with-colin-edwin https://bassmusicianmagazine.com/2013/04/colin-edwin-bass-musician-magazine-qa/