Eko JB 400 Stealth Black

A Vintage Silhouette, a Stealth Personality

The Eko JB400 Stealth Matte Black adopts the classic features of JB-style basses: an asymmetrical body with welcoming curves, two single-coil pickups, and a four-saddle bridge and tailpiece assembly. The Italian manufacturer Eko draws on a proven formula here to offer an accessible instrument designed above all to support the first steps into electric bass.

This Stealth version retains the model's retro lines while giving them a more modern appearance. Its satin Black finishing emphasizes the body's contours and gives it a distinctly rock-oriented presence. It's a way to recapture a familiar aesthetic without adopting a strictly traditional look: the silhouette remains vintage, but the visual identity is more understated.

A First Bass for Finding Your Bearings and Your Style

The JB400 is especially suited to beginner bassists looking for a versatile instrument with which to learn, rehearse, and build their first bass lines. Paulownia helps keep the body's weight down, which is particularly appreciated when practice sessions run long. The body's curves contribute to comfort, while the double cutaway makes it easier to reach the higher frets on the key.

Its configuration suits a wide range of approaches: accompanying a pop song with your fingers, working on a pick attack in a rock band, or exploring more percussive funk rhythms. The controls make it easy to understand the practical role of each pickup. This allows you to learn how to place your sound within an ensemble without having to manage a multi-band active EQ.

Two J Pickups, from Warmth to Attack

The two J-style single-coil pickups form the sonic heart of this electric bass. Their character combines punch, pronounced mids, and a broad range of tones. The neck pickup encourages a rounder response, while the one positioned near the bridge places greater emphasis on attack and definition. Blending them allows you to balance these two personalities according to the song and playing technique.

The passive electronics are based on two independent volume controls and a master tone control. Each volume adjusts the contribution of its pickup, making it possible to emphasize one or combine both without using a selector switch. The tone control can then attenuate the brightness for a softer response, or retain more treble to bring out the articulation of the notes.

With a clean sound, the JB400 can cover both warm accompaniment and more incisive lines. With external distortion, its attack can take on a sharper, more percussive character suited to a rock setting. This flexibility allows beginners to explore several registers with the same instrument while discovering how the position of the picking hand and playing intensity influence the result.

The construction completes this configuration: the paulownia body provides lightness and resonance, while the roasted maple neck contributes to a stable build and a direct response. The laurel key complements this balance. Finally, the four independent saddles allow precise adjustment of the height and vibrating length of each string, to adapt the touch, refine the intonation, and encourage even transmission of vibrations as well as sustain.

Technical specifications

Body type	Solid	Tuning pegs	Vintage
Electronics: microphone configuration	SS	Original Strings	Eko 45/105
Neck: finish	Satin Finish	Scalloped	Double
Fretboard: side markers	Yes	Body	Paulownia
Type of tuners	Open	Pickguard	3-ply
Category	JB	Bridge / tailpiece	Standard with 4 saddles
Truss Rod	Double-action	Nbre of pickups	2
Strings	Metal	Middle pickup	Type J
Nbr of strings	4	Bridge pickup	Type J
Neck	Roasted maple	Electronics	Passive
Neck format	C low profile	Settings	Tone, 2x volume
Nut Width	42 mm	Headstock	Matched with the body color
Fingerboard	Laurel	Color	Black
Marker	Point	Colours	Stealth Matte Black
Nbrs of frets	21	Finishing	Satin
Scale (mm)	868 mm	Origin	China

Instrument type	electric bass	Adjustable bridge parameters	action and intonation
Number of strings	4	Electronics type	passive
Format	vintage JB-style, offset double-cutaway body	Number of pickups	2
Body wood	paulownia	Pickup type	J-style single-coil
Finishing name	Stealth Matte Black	Pickup configuration	one neck pickup and one bridge pickup
Neck wood	roasted maple	Volume controls	2 independent volume controls, one per pickup
Assembly	4-point bolt-on neck	Tone control	master tone
Key material	laurel	Brand	Eko
Number of frets	21	Model	JB400
Bridge	4-saddle bridge-tailpiece block	Version	Stealth Matte Black
Saddle adjustment	independent for each string