Detail 01
12–16-inch compound radius
The fingerboard radius changes along the 34-inch scale length.
Product detailSKU #1500000259545
JacksonJS Series Spectra Bass JS3 Black
aggressivehigh outputmodernwarmmetalhard rock
1/5
Independent shopping perspective
The Korena take
The black Spectra Bass JS3 is a four-string electric bass with a 34-inch scale, bolt-on maple neck, and 24 jumbo frets on a laurel fingerboard. Its offset poplar body and enlarged upper horn are designed to spread the bass’s weight more evenly for extended playing. The dual humbuckers can be coil split, while the 3-band active EQ handles low, mid, and high-frequency adjustment. A pull on the volume knob takes the active circuit out of the path for passive operation.
Strong match
Who this is for
- Players who need a four-string bass with adjustable bass, midrange, and treble controls.
- Long rehearsal or performance sessions where a more evenly distributed body design is useful.
Consider the trade-offs
When to look elsewhere
- Players who require a five-string bass.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Two-way pickup toggle
It splits the coils of each humbucking pickup for a brighter single-coil sound.
Detail 03
HiMass bridge
Adjustable saddles allow intonation to be set accurately up the fretboard.
Final check
Know before you order
- 01A case or gig bag is sold separately.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What happens if the active circuit is unavailable?
Pull up the volume knob to bypass it and use the passive tone circuit.
02How many frets are on the bass?
It has 24 jumbo frets.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
5 detailsPickups & controls
- Special Electronics
- 3-band EQ
- Neck
- Proprietary humbucker
- Pickup Configuration
- HH
- Control Layout
- Master volume
- Bridge
- Proprietary humbucker
7 detailsPlayability
- Fret Size
- Jumbo
- Nut Material Width
- Plastic/1.5 inch
- Radius
- Compound
- Orientation
- Right-handed
- Number of Frets
- 24
- Number of Strings
- 4 string
- Scale Length
- 34
12 detailsBody & build
- Color
- Black
- Body Material
- Poplar
- Body Finish
- Gloss
- Body Type
- Solid Body
- Inlays
- Dot
- Wood
- Maple
- Finish
- Satin
- Neck Wood
- Maple
- Fingerboard Material
- Laurel
- Neck Joint
- Bolt-on
- Tuning Machines
- Sealed die-cast
- Bridge Tailpiece
- High mass
1 detailsIn the box
- Case or Gig Bag
- ✕ Sold separately
1 detailsOther
- Truss Rod
- Dual-action
