Fujigen Mighty Jazz Bass 5-String Review: Made in Japan and It Shows

Unboxing videos are usually forgettable. But when the box contains a Fujigen Mighty Jazz 5-string, there’s actually something worth paying attention to. Fujigen is not a brand you stumble into by accident — you find it when you’ve been playing long enough to know what you’re looking for.

This is a Japanese bass. Made in Japan. And that matters in ways I’ll get into.

Rating: 5/5

Verdict: The FGN Mighty Jazz JMJ5-ASH-M is a Made-in-Japan 5-string with an ash body, a maple neck, a Seymour Duncan Quarter-Pound J at the neck and a Seymour Duncan humbucker at the bridge. Fretwork, nut and finish are done right from the factory, and the 34″ low B is defined and usable. It is ideal for experienced players and gigging musicians who want a refined 5-string without boutique prices. It is not the right first bass.

What Is Fujigen?

Fujigen (FGN) is a Japanese guitar and bass manufacturer based in Matsumoto, Nagano. They’ve been making instruments since 1960. For most of that time they were behind the scenes — building guitars for Fender Japan, Ibanez, and other major brands. In 1999 Fujigen guitars came out under the company’s own name, and the FGN brand followed in 2000.

The point is this: when you buy a Fujigen, you’re buying from a factory that has decades of experience building professional instruments. The quality control is not an accident.

Mighty Jazz 5-String: What You’re Getting

The Mighty Jazz series is Fujigen’s take on the Jazz Bass format — the offset double-cutaway body, made slightly thicker, on a bolt-on maple neck. This JMJ5-ASH-M has an ash body and pairs a Jazz-style pickup at the neck with a humbucker at the bridge. But Fujigen doesn’t just copy Fender. They refine it.

The build on this bass is impeccable. Fret ends are perfectly dressed — no sharp edges anywhere on the neck. The nut is cut properly so the strings seat at the right height. These are things you expect to fix on a budget bass. On the Fujigen they’re done correctly from the factory.

The 5-string version specifically has a 34-inch scale. The low B string has decent tension — not as tight as a 35-inch scale, but more than adequate for most playing situations. The B string doesn’t feel like an afterthought the way it does on some 5-string basses at this price point.

The Tone

Both pickups are Seymour Duncans: a Quarter-Pound J at the neck and a 5-string SMB-5D humbucker at the bridge, with a push-pull on the tone knob for series or parallel. Solo the neck pickup for warm, round tones. Solo the bridge for a tighter, cutting sound. Both together for a full blend that works for almost everything.

The Fujigen version of this is very well-voiced. The pickups are quiet — the bridge humbucker cancels hum on its own — and the output is strong. You’re not fighting your amp to get volume out of this bass.

I compared it to a Yamaha BB734A in a separate review. The characters are very different — the BB734A is more modern and aggressive, the Fujigen is more classic and refined. Neither is better. They serve different musical contexts.

Made in Japan — Does It Matter?

For some people the “Made in Japan” stamp is just a marketing point. For me it represents something real: consistency. Japanese manufacturing standards for musical instruments are among the highest in the world. Every Fujigen that leaves the factory plays the same way.

You won’t find a bad one in the batch. That’s not true of every brand, especially at competitive price points.

The Mighty Jazz 5 costs more than a comparable Indonesian or Chinese-made Jazz Bass. That premium buys you fit and finish, material quality, and the confidence that you’re not getting a lemon.

Who This Bass Is For

The Fujigen Mighty Jazz 5 is for a player who already knows what they want. If you’ve played Jazz Basses before and you want the best version of that format in a 5-string configuration without going to a full boutique instrument — this is the answer.

It’s not the right first bass. Not because it’s hard to play — it’s actually very comfortable — but because you’d be spending money on refinement that a beginner won’t notice or appreciate yet. Buy it when you know what good feels like, so you can recognize what you’re getting.

For gigging musicians who need something reliable that will show up correctly every night — the Fujigen Mighty Jazz 5 is a working bass. It will not embarrass you on stage.

FAQ

Is Fujigen a good bass brand?

Yes, Fujigen is one of the most respected Japanese bass manufacturers. They built instruments for Fender Japan and Ibanez for decades before releasing their own line. Build quality is consistently high.

Where are Fujigen basses made?

Fujigen basses are made in Japan, in Matsumoto, Nagano. This is one of their key differentiators compared to other brands in the same price range.

How does the Fujigen Mighty Jazz compare to a Fender Jazz Bass?

The Fujigen Mighty Jazz uses a similar body format — offset double cutaway, Jazz-style neck pickup — but this 5-string adds a Seymour Duncan humbucker at the bridge, and the build quality and consistency are typically better than standard Fender Mexican models and comparable to or better than Fender American Standard. The tone character is similar but the Fujigen tends to be slightly cleaner and more refined.

Is the 5-string Fujigen Mighty Jazz good for beginners?

It’s better suited to intermediate or advanced players who will appreciate the build quality and refinement. A beginner would do fine on it technically, but the price premium is better spent once you know what you’re looking for in an instrument.

What is the scale length of the Fujigen Mighty Jazz 5?

34-inch scale. The low B string has decent tension and is more than usable for most styles. Players who need a very tight B for heavy styles might prefer a 35-inch scale instrument.

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The Fujigen Mighty Jazz 5-string is one of those instruments that makes you question why you’d spend three times as much for a name badge. The craftsmanship coming out of Fujigen’s Matsumoto factory is genuinely world-class. The tolerances on the fretwork, the precision of the neck pocket, the consistency of the finish — these are things you typically find on instruments costing significantly more.

The Jazz Bass blueprint has been copied by everyone, but Fujigen doesn’t copy. They interpret. The Mighty Jazz has its own character while respecting the design principles that made the original great. For a working bassist who wants reliability and tone without the boutique markup, this is a serious option.

Japan’s instrument manufacturing culture values precision in a way that’s difficult to replicate elsewhere. You feel it in the Mighty Jazz from the first time you pick it up.