The X3M.

The X3M takes the Miezo to the next level: five different necks for five scale lengths which fit the same body and are über-easy to disassemble and reassemble.
Scale length available are: 25.5",  22.75" and 18". Take your pick. The 18" scale neck bolted onto the body fits right inside the X3M gig bag. The other two necks fit inside individual pockets in a separate compartments. And that is all within maximum hand-carry size allowed by our beloved airlines.
We also offer a custom 27" and  a30" scale model. They will marginally exceed the maximum allowed length - the 30" by a mere 2" and needs a custom gig bag. Those who do not travel often will find in the super light 27" and 30" long X3M the best companion for long gigs - and fitting inside a guitar gig bag.

The X3M is a serious bass and not a scaled down, tamed MüB. Plug it in and you will wonder how such a light, nimble bass can sound so big: tight lows, even response across the board, well balanced tonal range and a B string so tight you won't believe you're playing a short scale bass. And it's incredibly light, at around 6lbs for the 30" scale bass.
Explore the inherent tonal differences of the scales. Try different tuning,  different string type and gauge. It's a very creative approach that opens up a universe of tonal possibilities. Either ways, the X3M is an amazingly flexible design, built by the same people who build your MüB, with the same tools and the same uncompromising passion,

Body: Mahogany, Raintree.1 Bartolini Singularity p-up, passive V, T;  Hardware: Mono-unit brass tuner/bridge and string anchor by ETS/MüB (the individual string bridge/tuners shown in the picture are a custon order).
$630 (4);  $700 (5);  $830 (6)  7 strings and above $150 per string.
One piece maple neck - carbon fibre reinforced under first 3 frets. 
Fretboard: Ovangkol, maple, ironwood (only 4, 5).
18"  scale: $150(4); $200 (5); $250 (6)
22.75" scale: $200 (4); $250(5); $300 (6);
25.5" scale:$300 (4); $350(5); $400 (6)

(7 strings and above: USD50 per string on any scale length).

If you want something more custom here are some of the options:

-Multi laminate neck: depending on woods, please ask for a quote.
-Fingerboard: Ebony, purpleheart, bloodwood, birdseye maple, pau ferro,
roasted maple (and more) starting at $70 depending on grade and neck scale.

Top: Starting at $100 . Burls, ebonies and exhibition grade tops are priced individually. X3M with top can be lightly chambered free of charge.
-Body: Walnut, Padauk, flamed Asian Mahogany and more: add $100/150. White ash: $50. Other woods are priced individually.

Upgrade to Dual coil p-up $50 second p-up Singularity $150, DC $200
Coil tap for Dual/Single coil option, add $50
3 band preamp (Bartolini, Nordstrand, Aguilar) $280 - 2 band, $230 including our super-slick shielding. Other brands available. Please ask for a quote.

Individual bridge/tuner units add $25 per string.

MüB-H Onboard headphone amp $120. With aux input jack $160.

-Piezo bridge and buffer; octaver. Please ask for a quote.

We offer a package price for orders of three necks and above.
27" and 30" scale length necks are available as custom order. But the 30" will not fit inside the gig bag.

The X3M is available with same body thickness as our full scale MüB (40mm). Or in a thinner option (35mm) to further reduce the weight. No price difference.

Lead time is minimum three months, depending on specs. To place an order or discuss specs you can contact us at Or just send USD300 deposit by clicking this cute button right here. Thank you!
About Paypal fees: In their immense generosity, Paypal arbitrarily state that, fees are on the seller side. Reality is, we pay Paypal fees on almost everything we buy for the shop. So we kindly ask you to share the burden with us. It's usually 4 to 5%. Say, you pay only 2% and everyone's happy. It isn't much - $20 on every 1,000 bucks.. But for us, paying $40 fees when we have already paid once seems unfair. To be sure, you can choose not to split the fees. We won't argue. Thanks.

Please note: prices do not include shipping or any import tax on your end. But you know that ;-)   Please refer to the Price page for more details.