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Moon Guitars Japan JJ-4 300B

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Page last updated Mar 10, 2026

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Discover the harmonious blend of tradition and innovation with the Moon Guitars Japan JJ-4 300B, an electric bass that caters to both seasoned professionals and aspiring musicians. Crafted in Japan, this bass embodies the meticulous attention to detail and superior craftsmanship that the Moon Guitars brand is renowned for. With its custom-wound pickups, the JJ-4 300B offers a rich, full-bodied sound that captures every nuance of your playing style.

The bass features a sleek, contoured body design that ensures comfort during extended play sessions, while the smooth maple neck provides effortless playability, making it ideal for both gigging musicians and studio recording artists. Its versatile tonal range is perfect for various musical genres, from jazz and funk to rock and blues, making it a reliable choice for any bassist looking to expand their sonic palette.

The Moon Guitars Japan JJ-4 300B is equipped with high-quality hardware, ensuring stability and durability. This instrument not only meets the demands of precision performance but also offers an aesthetically pleasing design that will stand out on stage or in any collection.

Key Features:

Custom-wound pickups for a full-bodied sound
Sleek contoured body for comfortable play
Smooth maple neck for effortless playability
Versatile tonal range suitable for various genres
High-quality hardware for stability and durability
Crafted in Japan with meticulous attention to detail

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星乃ららちゃんねる♪

Saving My Love For You / Graham Central Station Cover♪

星乃ららちゃんねる♪

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Moon Guitars Japan JJ-4 300B.

Features and functionality

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The Moon Guitars JJ-4 model is praised for its classic setup with three knobs and an "LPF switch" for versatile tone control, reminiscent of Victor Bailey's 80s basses.
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Comparisons

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Moon Guitars, Atelier Z, Momose, and Freedom are noted for producing Fender-inspired basses, often surpassing Fender's quality in terms of build and tone.
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User experience

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Enthusiasts highlight Moon Guitars' Larry Graham signature model as highly desirable, though it's considered to be priced at a premium.
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Use cases and applications

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The Moon JJ-4 is recommended for players seeking a versatile bass suitable for a wide range of styles, with a particular nod to jazz and funk genres.
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Build quality

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Moon Guitars are renowned for meticulous craftsmanship, with a specific mention of the high-quality finish and detailed woodwork that Japanese instruments are known for.
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Prince

Guitarist, Bassist

Prince

Verified via Tripod

"The Artist plays bass on nearly all of the Rave Un2 the Joy Fantastic tracks. (Rhonda S. appears on two songs.) For most of his parts The Artist used Graham’s Moon bass with Bartolini pickups; when the Moon was unavailable he used the Warwick Eye Bass."

Pino Palladino

Bassist

Nine Inch Nails

Verified via Photo

Pino Palladino played a Moon JJ-4 300B bass, recognizable by its completely white finish, during the Voodoo tour with D'Angelo from March to October 2000. A photo from Soulfest Brisbane 2014, available on Beaveronthebeats, shows Pino using this distinctive bass. Notably, he tuned his Moon basses down one whole step (D-G-C-F), a technique shared by the legendary Larry Graham, also a known Moon bass player.