Detail 01
Control set
Master volume, pickup balance, bass, middle, treble, and the active/passive switch place the stated adjustments on the instrument.
Product detailSKU #1378824449049
YamahaTRBX504 4-String Premium Electric Bass Transparent Brown Rosewood Fretboard
aggressivehigh outputmodernmetalhard rockblues
1/2
Independent shopping perspective
The Korena take
In Transparent Brown, the four-string TRBX504 combines a solid-mahogany body with a five-piece maple/mahogany bolt-on neck. YGD H5 pickups use Alnico magnets and a quad-polepiece arrangement, working with an active/passive circuit that keeps levels matched when switching modes. Volume, pickup balance, bass, middle, and treble controls offer direct adjustment, while passive operation assigns the control to master tone. The rear battery-alert LED adds a useful check before performing. Its 19 mm bridge spacing, 38 mm nut, and 34-inch scale complete the stated layout.
Strong match
Who this is for
- Performances where switching between active and passive operation without an output jump matters.
- Four-string players who want pickup balance plus bass, middle, and treble controls.
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
Matched active/passive output
Switching modes does not change the output level according to the circuit design.
Detail 03
Battery-alert LED
The rear-panel LED indicates low battery power.
Detail 04
19 mm die-cast bridge
This four-string bridge uses 19 mm spacing and is described as adjustable.
Final check
Know before you order
- 01The active/passive switch changes the treble control to master passive tone.
- 02The battery-alert LED is located on the back panel.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I switch the TRBX504 between active and passive modes?
Yes. It has an active/passive switch and level-matched output across both modes.
02Which controls are included?
Master volume, pickup balancer, bass, middle, treble, and an active/passive switch.
03What are its nut width and scale length?
It has a 38 mm nut width and a 34-inch scale length.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
4 detailsPickups & controls
- Controls
- Master Volume, Pickup Balancer, Bass, Middle, Treble and Active-Passive switch (Battery Alert LED on back)
- Neck
- Maple and mahogany 5-piece
- Bridge
- Die-cast 19 mm
- Pickups
- HHB5n (Alnico V), HHB5b (Alnico V)
3 detailsPlayability
- Nut Width
- 38
- Radius
- 10'' (250 mm)
- Scale Length
- 34
4 detailsBody & build
- Color
- Brown
- Fingerboard Material
- Rosewood
- Body
- Solid mahogany
- Hardware Color
- Black Nickel
1 detailsOther
- Tuners
- Die-cast
