Yamaha Trbx504 Trans Brown
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Manufacturer Information
Yamaha
https://www.yamaha.com
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Yamaha Music Europe GmbH
Email: info@yamaha.de
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A TRBX 500: The Right Balance Between Look, Gear, and Performance
The TRBX series targets bassists seeking a contemporary aesthetic and true sonic flexibility. Within the range, the TRBX504 stands out with a "performance"-oriented approach: serious pickups, refined hardware, and especially an Active/Passive electronics system designed to adapt to various contexts (rehearsal, home studio, concert) without losing the instrument's natural character.
For Which Bassists and Styles?
The TRBX504 is particularly aimed at intermediate to advanced bassists looking for a unique bass capable of handling multiple genres. Thanks to its active/passive system and humbuckers, it performs very well in pop, rock, funk, neo-soul, modern metal, gospel, and contemporary music, with excellent ability to switch from a "in the mix" sound to a more present and articulate tone.
The Sound
With its mahogany body, the TRBX504 offers a warm sonic foundation, with solid lows and full low-mids, ideal for locking in the groove. The 5-piece maple/mahogany neck provides stability and precise response, while the rosewood fingerboard softens the attack for a musical and balanced output. The two Yamaha HB pickups (humbuckers) deliver a strong output level and good noise rejection, helping maintain a clean sound in high-gain setups. In active mode, the 3-band EQ allows quick adjustment of bass depth, mid presence, and treble brightness; in passive mode, you get a more direct dynamic, perfect for playing nuances and vintage/roots tones.
Recommended Compatible Accessories
To fully exploit the long scale, prioritize a 34" (long scale) / 864 mm bass string set, suited to your playing style (lighter gauge for more flexibility, heavier gauge for a firmer attack and better tuning stability in lower tunings).
Technical specifications
| Electronics: microphone configuration | HH | Body | Mahogany |
| Left handed | No | Bridge / tailpiece | Fixed |
| Strings | Steel | Electronics | Active |
| Nbr of strings | 4 | Color | Brown |
| Fingerboard | Rosewood | Finishing | Matt |
| Nbrs of frets | 24 | Hardware | Chromed |
| Type | electric bass | Preamp | active/passive |
| Neck | 5-piece maple/mahogany | EQ | 3-band |
| Scale length | 34" / 864 mm | Controls | volume |
| Tuners | Yamaha Black Chrome | Net weight | 4000 g (4.0 kg) |
| Pickups | 2x Yamaha HB | ||
Questions frequently asked
Does the Yamaha TRBX504 Trans Brown operate without a battery?
The active/passive preamp allows usage in passive mode with direct dynamics. The active mode provides access to a 3-band EQ to adjust bass, mids, and trebles.
What music styles can this 4-string bass cover?
The HH configuration with two Yamaha HB pickups is suitable for pop, rock, funk, neo-soul, modern metal, gospel, and contemporary music styles. The mahogany body delivers consistent lows and full low-mids.
What is the scale length of the TRBX504?
The scale length measures 34 inches, or 864 mm. Long scale 34-inch bass strings are recommended for this format.
What woods are used for the neck and body?
The body is made of mahogany, while the neck consists of five pieces of maple and mahogany. The rosewood fingerboard helps soften the attack. This construction includes 24 frets.
What is the weight and finish of this bass?
This instrument has a net weight of 4.0 kg. The Trans Brown finish is matte, complemented by chrome hardware and Yamaha Black Chrome tuners.



