Yamaha TRBX604FM Review & Prices

Yamaha TRBX604FM Review
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  • From Yamaha's 2018 600 series
  • Made in Indonesia
  • 4 strings
  • 34"'' scale
  • 9.843" Fretboard Radius
  • Flamed Maple / Alder body
  • Maple/Mahogany 5pcs neck
  • Rosewood fretboard
  • Bridge pickup: Double Coil / Alnico V (Preamp/Passive)
  • Neck pickup: Double Coil / Alnico V (Preamp/Passive)
  • 1 volume and 3 tone Dome knobs
  • 3-way Switch
  • Die-cast bridge
  • Bass C Bolt-On neck
  • 24 Medium frets
  • Covered / Die-cast tuners
  • Compare Specs >

Our Scores and Tone Evaluation

Playability 75
Sound 84
Build quality 62
Value for money 79
Overall Score 74
Tone Evaluation
  • Heavy Metal
  • Hard Rock
  • Jazz
  • Blues
  • Funk
  • Country
Strengths & Weaknesses
Yamaha TRBX604FM
  • Expensive Wood
  • Top Brand Pickups
  • Active/Passive Preamp
  • Cheap Fret Wire (NS)
  • No Locking Tuners
  • Made in Indonesia
  • No High-Quality Nut
  • No Neck-Through Build
  • No Push Knob or Extra Switch Option
  • No Weight Relief
  • No Luminescent Inlay
  • No Compound Radius Fretboard
  • No 21:1 Tuner Ratio
  • No Retainer Bar
  • No Strap Lock

Price Overview

Its average competitor's price is $450, which means that the Yamaha TRBX604FM costs around 29% more than the competition. It might be due to it having additional features, but know that you can find cheaper similar alternatives. This takes into account all instruments of the same category in our database with 4 strings and Fixed bridge that are made in Indonesia.

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Your feedback

Not all instruments are created equally. That's why it's important to have different opinions. Here's what our users who have played this instrument say. If you've played it before, help others by voting below!

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Is it Easy to Play?

The Yamaha TRBX604FM meets 5 out of our 6 criteria items for beginner friendliness, which means that it's a good bass to start with as a complete beginner. This takes into account the type of frets, scale length, nut width, bridge type, fretboard radius, and neck profile to determine the easiest combination for new players to get used to.

New Player Friendliness

Yamaha TRBX604FM
  • Comfortable shape
  • Comfortable fretboard
  • Tall frets
  • Narrow nut
  • Comfortable neck
  • Short scale

Hand Size Comfortability

After taking into account the neck profile, scale size, fretboard radius, and nut width, we can conclude that the Yamaha TRBX604FM's construction favors people with relatively small hands.

Nevertheless, this comes down in the end to personal preference. Make sure you test this bass—or another one with similar characteristics—before buying.

Big Hands
Small Hands

Scale Length

Scale length is the distance the strings will span between the bridge and the nut. It can tell you a lot about the overall playability and tone of the instrument. A longer scale length means longer distance between frets, brighter tone and more string tension—which means lower action, but more difficult bending of the strings.

Here's the Yamaha TRBX604FM's 34" scale length compared to other common sizes:

Yamaha TRBX604FM Scale Length Comparison
Yamaha TRBX604FM's scale length (at the top) compared to other popular sizes

This is considered a long scale bass, and it's the most popular choice for several reasons. Even though it might be more difficult to play than short scale basses due to their increased string tension, their punchier low-end results in a clear and defined bass tone that can cut through in a mix, making them well-suited for genres like rock, metal, and funk.

Neck Profile

Yamaha TRBX604FM Neck Profile
Yamaha TRBX604FM's neck profile

The neck profile tells you the thickness (neck depth) and shape in cross section. Every difference will completely change the feeling and comfortability of the neck. This is a highly subjective thing, but most players indeed prefer certain types of necks (like Cs and Ds) because they feel nice in most hands.

It has a C type neck. C-shaped necks like this have been the most popular for the last years. The reason is that they feel good in most hands. It's generally a thin neck that doesn't get in your way when playing fast, but that also has enough mass to give your hands a comfortable grip for chords if they aren't too big.

Thin necks like this make it easier to move your hand across the neck and it helps when playing fast solos, especially if you like to leave your thumb free while playing high on the fretboard. However, thinner necks are also weaker and will need adjustment more often than a thicker neck.

Fretboard Radius

When it comes to fingerboard radius, personal preference will dictate which one is better for you. However, most people seem to agree that a more curved (lower) radius will make it easier to play chords while a less curved (higher) radius is better for soloing and bending.

The Yamaha TRBX604FM has a 9.843" fingerboard radius.

Here's an image comparing this fretboard radius to other popular choices:

Yamaha TRBX604FM Fretboard Radius Comparison with Fender Stratocaster and Gibson Les Paul
Yamaha TRBX604FM's fretboard radius compared to others

This is a radius that makes it comfortable to play chords, but that's just slightly flatter than the typical Strat fingerboard. It's still not as flat as a Les Paul, so it might not be as comfortable for soloing. The feel sits right in between a Strat and a Les Paul, although it feels more like the former.

Compound radius fingerboards give the best of both worlds. Unfortunately, the Yamaha TRBX604FM has the same radius across the board.

Playability compared to main competitors

34'' Scale Length
C Neck Profile
1.417'' Nut Width
9.843'' Fretboard Radius
34'' Scale Length
C Neck Profile
1.496'' Nut Width
9.843'' Fretboard Radius
34'' Scale Length
C Neck Profile
1.496'' Nut Width
9.843'' Fretboard Radius
34'' Scale Length
C Neck Profile
1.417'' Nut Width
9.843'' Fretboard Radius
34'' Scale Length
C Neck Profile
1.417'' Nut Width
9.843'' Fretboard Radius

Nut Width

Yamaha TRBX604FM Nut Width
Yamaha TRBX604FM Nut Width

The Yamaha TRBX604FM has a nut width of 36mm (1.417''). This is considered a narrow width for a 4-string bass. A narrow nut width can make it easier for players with smaller hands or shorter fingers to navigate the fretboard comfortably. However, the limited string spacing may pose challenges for slap bass techniques. Additionally, players with larger hands might find a narrow nut width uncomfortable and potentially lead to more accidental muting of neighboring strings.

Frets

The Yamaha TRBX604FM has 24 frets. A lot of people mistakenly believe that having more frets will always be better because it gives you a higher octave. This is certainly an advantage, but there's also a disadvantage to this.

Since the fretboard will be longer, the neck pickup will need to be placed closer to the bridge. And as you may know, the further away the neck pickup is from the bridge, the warmer it sounds. This means you'll have a brighter-sounding neck pickup when using a 24-fret bass, even if you use the same pickup on a 22-fret bass.

It comes with nickel silver frets, so they won't last as long as stainless steel frets. If you use your instrument a lot, you might need to replace the frets after a few years. But this is unlikely as most people change instruments before this happens.

Fret Size

Yamaha TRBX604FM Fret Size Comparison
Yamaha TRBX604FM's fret size (in orange) compared to other popular sizes

Finally, let's talk about fret size. Some people prefer tall frets because it's easier to press the strings and perform bends since there's less friction against the fretboard. On the other hand, some people like shorter frets because they like to touch the fretboard when playing, or because they got heavy hands and tend to press too much on the string and alter the of the note pitch accidently.

The Yamaha TRBX604FM's frets are Medium size. With medium frets, you can feel the fretboard more than with jumbo frets, but it's still easier to press the strings cleanly than with small frets; notes might change their pitch just slightly if you press hard on the fret. Also, if you need to do some fret leveling after years of playing, you'll have some room to sand them down without having to replace them.

Playability Score

Bending & Vibrato Ease 65
Chord Playability 90
Solo Playability 70
Playability 75

Tone Analysis

Wood will have little influence in the final tone of an electric guitar or bass. Instead, the hardware, especially the pickups, will be the most important thing to look at. Bur first, let's see the quality of the wood.

Wood

Flame Maple wood pattern used for guitar building
Flame Maple Body
Mahogany wood pattern used for guitar building
Mahogany Neck
Rosewood wood pattern used for guitar building
Rosewood Fretboard

Flame Maple Body: This wood has beautiful patterns only found in specific types of maple.

Mahogany Neck: This is the type of wood found in many top-of-the-line guitars, so that's a positive point for the build quality. This red-looking wood Mahogany is found in Africa and Central America and has great sustain and a warm tone due to its high density. The downside about this type of wood is that it's relatively heavy.

Rosewood Fretboard: Since the ban of Brazillian Rosewood, this has become a rare and expensive wood. It's not usually used for guitar bodies because of this, and also because it's heavy. Instead, it's used mainly for fretboards. Sometimes it's also used for necks because it's an extremely hard wood (even harder than maple). Its tonality tends to favor warm tones.

Pickups

This bass comes with pickups from one of the top brands: Yamaha. So you can expect well built pickups with great sound that shouldn't need an upgrade anytime soon.

These are passive pickups, so you can expect a rounder sound and a moderade level of output.

Preamp

The preamp is an electronic circuit that serves as an intermediary between the bass's pickups and the amplifier. Its primary function is to boost and shape the bass's raw signal before it reaches the amplifier. This allows for greater control over the bass's tone, volume, and other sound characteristics. Preamps often include tone controls, equalization settings, and sometimes even onboard effects, enabling bassists to tailor their sound to their preferences and the musical context.

This bass has a Active/Passive preamp. This means it combines both passive and active electronics in one instrument. This versatile setup allows the player to switch between passive and active modes, providing a wide range of tonal options. In passive mode, the bass relies on traditional passive pickups and tone controls for a warm and organic sound. In active mode, the onboard preamp circuit is engaged, offering enhanced EQ shaping capabilities and sometimes a signal boost. This flexibility caters to a broader spectrum of musical styles and playing preferences, as it allows the bassist to switch between the classic, vintage tone of passive operation and the more versatile and finely tuned active mode, all within the same instrument.

The Yamaha TRBX604FM's configuration is HH. With this pickup combination, you'll get warmer tones and more output than using single coils. Humbucker pickups cancel the noise that single-coil suffer from, which also results in a warmer tone. This pickup combination isn't only for high-gain music like Hard Rock or Heavy Metal. Their warmness is also popular for Jazz, Indie, R&B, Blues and more.

More with the same pickups

24 Frets
Fixed Bridge
Double Coil / Alnico V Bridge Pickup
Double Coil / Alnico V Neck Pickup
24 Frets
Fixed Bridge
Double Coil / Alnico V Bridge Pickup
Double Coil / Alnico V Neck Pickup
24 Frets
Fixed Bridge
Double Coil / Alnico V Bridge Pickup
Double Coil / Alnico V Neck Pickup
24 Frets
Fixed Bridge
Double Coil / Alnico V Bridge Pickup
Double Coil / Alnico V Neck Pickup

Versatility

It comes with the popular 3-way switch that is present in most guitars. For more versatility, players tend to prefer a 5-way switch, although it all depends on what you want to use your bass for.

Unfortunately, it doesn't come with more options for coil split or coil tapping. This makes it less versatile than some competitors.

Diagram

Yamaha TRBX604FM pickups switch and push knobs diagram
Yamaha TRBX604FM's switch options

What music genre is it good for?

As a 4 strings, Solid Body bass with HH configuration and Passive pickups, we'd recommend it for genres like Heavy Metal or similar. However, you can use almost any bass for any genre. This is just the typical type of music for this particular one.

Sound Score

Pickups 100
Sustain 60
Versatility 99
Tuning Stability 75
Sound 84

Build Quality Analysis

Country of Origin

Knowing where the instrument is produced is a good way to know how well it's built. Some manufacturing countries are known for having higher quality standards. For example, most expensive instruments are made in the US or Japan, but there are some exceptionally great countries—like South Korea—that are building a good reputation.

The Yamaha TRBX604FM is made in Indonesia. Many people prefer the quality of an Indonesian guitar over a Chinese. Respectable brands like Epiphone, Ibanez and Schecter are building in this country because of the great quality and lower price. Some people like to compare them to the ones built in Japan during the 80s, when Japanese guitar makers made a name for themselves.

Bridge

Die-cast: The advantage of fixed bridges is that they don't require any kind of set-up. This makes it extremely easy when changing strings because you don't need to adjust anything besides tuning the guitar. Also, the fact that the bridge is directly attached to the body will help to increase sustain. The disadvantage is the lack of versatility since you can't create the same vibrato effects as with tremolo bridges.

Nut Material

Another important thing to analyze is the nut material, as it's one of the most important aspects that can affect the sound and playability of your bass. A well-cut nut will make sure it stays in tune and will make it more comfortable to play.

In this case, the Yamaha TRBX604FM has a Plastic nut. This is a low-quality nut that you might want to consider upgrading soon. Bone and TUSQ nuts are the best for guitars with a fixed or simple tremolo bridge.

Neck Joint

The neck joint is the part where the neck of the bass meets the body. There are three main techniques to attach both parts together: Set-In, Bolt-On and Neck-Through. The latter two provide different advantages, although neck-throughs are the most expensive.

This bass has a Bolt-On neck joint. Even though this type of neck was looked down upon for a long time, nowadays bolt-on necks are well built and provide just as much sustain as any other join method. First of all, it's cheap to make because it consists of simply 4 bolts that attach the neck to the body. And you can travel with the guitar more easily, swap out the neck if you damage it, or upgrade to a more comfortable neck later on.

Build Quality Score

Quality of materials 41
Features 75
Quality Control 70
Build Quality 62

All Specs

Yamaha TRBX604FM
General
Brand: Yamaha
Year: 2018
Configuration: HH
Strings: 4
Made in: Indonesia
Series: 600
Colors: Black, Red, Yellow, Natural
Left-Handed Version: No
Body
Type: Solid Body
Body Material: Flamed Maple / Alder
Bridge: Die-cast
Neck
Neck Joint: Bolt-On
Tuners: Covered / Die-cast
Fretboard: Rosewood
Neck Material: Maple/Mahogany 5pcs
Decoration: Offset Dots
Scale Size: 34"
Shape: Bass C
Frets: 24 Medium
Fretboard Radius: 9.843"
Nut: Plastic
Nut Width: 36mm (1.417'')
Electronics
Switch: 3 Way
Knobs: Dome
Volume Controls: 1
Tone Controls: 3
Bridge Pickup: Double Coil / Alnico V (Preamp / Passive)
Neck Pickup: Double Coil / Alnico V (Preamp / Passive)

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