Janome MB-4S: hoop size, file formats and specs
Also written: MB4S, MB 4S, MB-4Se, MB4Se
Janome's single-head, four-needle embroidery machine for home use. It stitches a 9.4 × 7.9 in (240 × 200 mm) field at up to 800 stitches per minute, reads JEF, JEF+ and DST, and takes Tajima-style hoops. A 5.7 in remote screen runs it.
The Janome MB-4S is a 4-needle embroidery machine with a 9.5 × 8 in (240 × 200 mm) embroidery field. It reads .JEF, .JEF+, .DST files and gets designs by USB stick or USB cable to a computer, and has 50 built-in designs and 10 lettering fonts.
MB-4S hoop size and embroidery area
The MB-4S can stitch a design up to 9.5 × 8 in (240 × 200 mm) in one hooping, which is the 8 × 8 in size. That is the field limit: a larger hoop from another maker will not let it stitch a bigger area.
In the box: M1 hoop (9.5 × 8 in (240 × 200 mm)), M2 hoop (5 × 4.3 in (126 × 110 mm)), M3 hoop (2 × 2 in (50 × 50 mm)).
Check if your design fits the MB-4S
What file format does the MB-4S use?
The MB-4S reads .JEF, .JEF+ and .DST files. You load designs by USB stick or USB cable to a computer. Designs in other formats (for example .JEF or .EXP) need converting first with embroidery software.
Where to buy the Janome MB-4S
About $4,999 new (checked October 2026)
Multi-needle machines are often sold through dealers who include setup and training; compare dealer packages too.
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Janome MB-4S specs
| Type | Multi-needle (4 needles) |
|---|---|
| Embroidery field | 9.5 × 8 in (240 × 200 mm) |
| Hoops included | M1 hoop (9.5 × 8 in (240 × 200 mm)); M2 hoop (5 × 4.3 in (126 × 110 mm)); M3 hoop (2 × 2 in (50 × 50 mm)) |
| Cap frame | Available |
| File formats it reads | .JEF, .JEF+, .DST |
| Design transfer | USB stick or USB cable to a computer |
| Built-in designs | 50 |
| Lettering fonts | 10 |
| Screen | 5.7 in, colour, touch screen |
| Max embroidery speed | 800 stitches per minute |
| Weight | 45.2 lb (20.5 kg) |
| Status | Sold new |
| Typical price | About $4,999 new (checked October 2026) |
| Skill level | Intermediate |
Who the MB-4S is for
Suits people who stitch several colors per design, or caps and shirts, and want fewer thread changes than a one-needle machine. Not for anyone who needs a field wider than 9.4 in (240 mm) or wants a machine that also sews.
Strengths
- Four needles: load four thread colors at once and skip most manual re-threading
- Reads DST as well as JEF and JEF+, so industry-style designs load without conversion
- Up to 800 stitches per minute, with automatic trimming of jump threads, even between letters
- Optional hat hoop, plus lettering hoops and a sock hoop kit, and it takes Tajima-style hoops
- Jumbo bobbin 1.4 times larger than a standard one, and it can wind a new bobbin while stitching
Limits
- Embroidery only: it cannot sew
- Single head: one hooped item at a time
- Field is 9.4 × 7.9 in (240 × 200 mm), smaller than what many home combo machines now offer
- Weighs about 45 lb and needs a stable table; there is no needle threader
Good to know: Still listed on Janome's US site; Janome's Canadian page marks it discontinued, so check availability if you are buying outside the US. Janome does not show a newer MB-4 model in the US, and the MB-7 (seven needles) is a separate, larger machine. Janome writes the maximum area as 9.4 × 7.9 in (238 × 200 mm) in its spec list while naming the M1 hoop 240 × 200 mm; the M1 size is used here. Dealers sometimes write the name as MB-4Se. The older MB-4 was upgraded to the MB-4S, but the MB-4 has no file in this guide, so replaces is left empty. The hat hoop is optional and its stitch area was not confirmed.
Listed in our buying guides
Frequently asked questions
What is the embroidery area of the Janome MB-4S?
Up to 9.4 × 7.9 in (240 × 200 mm) with the M1 hoop. The M2 hoop covers 5 × 4.3 in (126 × 110 mm) and the M3 hoop 50 × 50 mm.
What file formats does the Janome MB-4S read?
JEF, JEF+ and DST. Designs go in by USB stick, or over a cable to a PC running Janome's Digitizer MB software, which is sold separately.
Can the Janome MB-4S embroider hats?
Janome sells an optional Hat Hoop for its multi-needle machines. It is not included with the MB-4S.
Is the Janome MB-4S the same as the MB-4?
The MB-4S is the updated version of the MB-4. Dealer pages list a jumbo bobbin, 1.4 times larger than a standard one, among the improvements.
Is the Janome MB-4S a commercial embroidery machine?
Janome sells it as a home-use four-needle machine. It has one head, runs up to 800 stitches per minute, and accepts Tajima-style hoops and DST files.
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Sources
Specs come from Janome's own pages and manuals, checked October 2026. Prices are typical ranges, not live prices. We are not affiliated with Janome. See how we research.