Jackson USA Signature Jeff Loomis Kelly vs Pro Series Signature Jeff Loomis Soloist SL7
Reasons to Get
Jackson USA Signature Jeff Loomis Kelly over Pro Series Signature Jeff Loomis Soloist SL7
Reasons to Get
Jackson Pro Series Signature Jeff Loomis Soloist SL7 over USA Signature Jeff Loomis Kelly
Other Key Differences
Jackson USA Signature Jeff Loomis Kelly vs Pro Series Signature Jeff Loomis Soloist SL7
Shared Features
Jackson USA Signature Jeff Loomis Kelly vs Pro Series Signature Jeff Loomis Soloist SL7
Common Strengths
- Neck-Through Build
- High-Quality Nut
- Compound Radius Fretboard
- Luminescent Sidedots
- Top Pickup Brand
- Expensive Wood
Common Weaknesses
- Pickup Alter Switch/Knob
- Weight Relief
- Retainer Bar
- Stays in Tune (Evertune)
- 21:1 Tuner Ratio
- Active/Passive Preamp
Table of Contents
Price History Comparison
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Which One is Better Overall?
After going through our comparison algorithm, the results show that the Jackson USA Signature Jeff Loomis Kelly is probably the better product overall with its final score of 81 compared to the Jackson Pro Series Signature Jeff Loomis Soloist SL7's 76 score, although not by a lot.
The Jackson USA Signature Jeff Loomis Kelly wins when it comes to build quality. On the other hand, the Jackson Pro Series Signature Jeff Loomis Soloist SL7 has the upper hand when it comes to value for the money.
If you got small hands, none of these instruments will make a big difference when it comes to comfortability.
Which One is Better for Beginners?
Both meet 4 out of our 8 criteria items for beginner friendliness. 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. If you're looking for your first guitar to learn how to play, you can't go wrong with either of them.
New Player Friendliness
Jackson USA Signature Jeff Loomis Kelly- Comfortable shape
- Comfortable fretboard
- Tall frets
- Comfortable neck
- Narrow nut
- Short scale
- Locking tuners
- Easy-to-use bridge
New Player Friendliness
Jackson Pro Series Signature Jeff Loomis Soloist SL7- Comfortable shape
- Comfortable fretboard
- Tall frets
- Comfortable neck
- Narrow nut
- Short scale
- Locking tuners
- Easy-to-use bridge
Nevertheless, when it comes to choosing an instrument, you should pick the one more compatible with your personal style. Still, below we'll try you to give you our results as objectively as it's possible to help you decide.
Jackson USA Signature Jeff Loomis Kelly Overview
- From Jackson's 2019 Artist Signature series
- Jeff Loomis Signature
- Made in United States
- 6 strings
- 25.5"'' scale
- 12" to 16" Fretboard Radius
- Sandblasted Ash top
- Ash body
- Quartersawn Maple neck
- Ebony fretboard
- Bridge pickup: Seymour Duncan Jeff Loomis Signature Blackouts (Humbucker/Active)
- Neck pickup: Seymour Duncan Jeff Loomis Signature Blackouts (Humbucker/Active)
- 1 volume and 0 tone Dome knobs
- 3-way Switch
- Floyd Rose 1500 Series Double-Locking Tremolo bridge
- Speed Neck-Through neck
- 24 Jumbo Stainless Steel frets
- Sperzel Die-Cast tuners
- Compare Specs >
Jackson Pro Series Signature Jeff Loomis Soloist SL7 Overview
- From Jackson's 2022 Pro series
- Jeff Loomis Signature
- Made in South Korea
- 7 strings
- 26.5"'' scale
- 12" to 16" Fretboard Radius
- Ash top
- Basswood body
- 3-piece Maple neck
- Ebony fretboard
- Bridge pickup: Seymour Duncan Jeff Loomis Signature Blackouts (Humbucker/Active)
- Neck pickup: Seymour Duncan Jeff Loomis Signature Blackouts (Humbucker/Active)
- 1 volume and 0 tone Dome knobs
- 3-way Switch
- Floyd Rose 1500 Series Double-Locking Tremolo bridge
- Jackson Standard Neck-Through neck
- 24 Jumbo frets
- Jackson Sealed Die-Cast tuners
- Compare Specs >
Sound Quality Comparison
The wood used in an electric guitar or bass is not as important to determine the final tone. However, some people prefer specific wood types, so we'll take a look at those first. Then, we'll take a look at the electronics to determine the versatility and sound quality of each instrument.
Woods Used in Both
Maple is one of the most popular necks for good reasons. It is a strong wood that is relatively cheap to make and looks beautiful. The highest quality maple is the hardest that comes from North America. Find out more about Maple.
Ebony is a high-end wood, so it is not cheap. It's only used for fretboards because it's also very heavy. It does an excellent job as a durable material while looking elegant. Find out more about Ebony.
Woods Used in the Jackson USA Signature Jeff Loomis Kelly
Ash is a type of wood that Fender used almost exclusively in the 50s, and it's still used by many brands. It's a dense wood with a light color that works well for a transparent, natural finish because of its beautiful patterns. In terms of sound, it's known for emphasizing the mid and high frequencies, but with strong low end. Find out more about Ash.
Woods Used in the Jackson Pro Series Signature Jeff Loomis Soloist SL7
Basswood is a lightweight type of wood that isn't as expensive as other popular choices for guitar building. It gives more power to the mid-range frequencies. Its color can vary from pale white to light brown. Find out more about Basswood.
Winner: Jackson USA Signature Jeff Loomis Kelly.
Pickup Configuration
Both pickup configurations are HH. Double Humbucker (HH) is the choice for people who want a fuller, more round sound with tons of mids and lows. Humbuckers also get rid of the hum noise that plague single-coil pickups. They can work out for almost any genre going from Djent to even Jazz.
Pickups Quality
Both come with very good pickups from at least one of the specialized brands in the market. With pickups like these, you probably won't need an upgrade anytime soon.
You can purchase similar pickups to the Jackson USA Signature Jeff Loomis Kelly's and use them on any guitar:
We found the same or similar pickups to the Jackson Pro Series Signature Jeff Loomis Soloist SL7's online:
Both use Active pickups. These pickups use an additional 9v battery to be able to increase their output for high gain tones. This is why they're popular among heavy metal guitarists. Their disadvantage is that you need batteries for the pickups, so you'll need to spend money on batteries and time swapping them. Also, the clean tones aren't as clean as other pickups because they'll have really hot output.
Winner: Tie.
Versatility Comparison
Some instruments offer you more ways to explore your creativity than others. Below you'll find how both compare when it comes to versatility.
Switch Options
Both are equal when it comes to the pickup switching option.
Neither of them come with some kind of coil split or pickup mod option. This makes both lacking in terms of versatility.
They both share the following switching options:
When evaluating versatility, we also take into consideration bridge and neck joint type, number of frets, switch options, amount of pickups and more.
Winner: Tie.
Final Sound Quality Scores
Build Quality Comparison
When it comes to build quality, we like to take into account everything used to build the instrument. This includes materials, hardware and the quality control expected depending on the country where it was built. Let's see how the Jackson USA Signature Jeff Loomis Kelly compares to the Jackson Pro Series Signature Jeff Loomis Soloist SL7.
Country of Origin
The manufacturing country can tell a lot about the build quality of an instrument. The Jackson USA Signature Jeff Loomis Kelly is built in United States while the Jackson Pro Series Signature Jeff Loomis Soloist SL7 is made in South Korea.
The United States is considered one of the best electric guitar manufacturers in the world. A guitar made in this country is supposed to have world-class quality control. Nowadays, guitars made in other countries can beat some of the ones made in the US, but most of the time, this country offers the best you can get. Of course, that comes at a price.
South Korea was for many years the number one choice for mass-producing semi-premium guitars. They can build excellent guitars for a cheap price. Now, it's less common to find Korean guitars because Indonesia has proved capable of building guitars just as well, but likely for cheaper.
Winner: Jackson USA Signature Jeff Loomis Kelly
Nut Material
If you want your guitar to stay in tune and sound good, you need a well cut nut. Nut quality can be inconsistent even when comparing two copies of the same model. The best way to make sure you're nut will be well done is by getting a nut made by an expert company like TUSQ or Micarta.
In this case, both have Locking nuts. Instead of a regular nut, this guitar has a locking system that will lock down the strings at the nut, preventing it from getting out of tune. It removes one of the disadvantages of tremolo bridges, tune stability.
Unfortunately, neither of them have a retainer bar for the nut, which would be a helpful addition. Without it, the strings will change pitch once you lock down the nut, so you'll have to make more micro-adjustments at the bridge to tune it correctly.
Winner: Tie.
Fret Material
Most fret wire is made of nickel silver. This material eventually wears down after a lot of use and most instruments end up needing a complete fret replacement. However, some expensive models come with stainless steel frets. This is what you should aim for if you can afford it.
In this comparison, the Jackson USA Signature Jeff Loomis Kelly is the only one that has stainless steel frets. These frets will basically last for the entire life of the guitar. They will never need polishing nor replacement. And not only that, but some people also notice that bending and vibratos are much easier to perform when they upgrade to stainless steel.
Winner: Jackson USA Signature Jeff Loomis Kelly.
Bridge
The perfect bridge for you will depend on your playstyle because they all have advantages and disadvantages. However, some bridges are more expensive—like Floyd Roses and Evertunes—and thus add more value to a guitar.
Both come with a similar bridge: Floyd Rose. This is a double-locking bridge system that allows you to perform techniques like dive bombs and pinch harmonics. The locking nut allows your guitar to stay in tune even after the most intense tremolo usage. The disadvantage is that it takes more work to change the strings and set up everything correctly.
Since we need to be objective, the most expensive type of bridge will be the winner of this section. In the end, this doesn't matter if you're not going to use the bridge for its original purpose, so choose the bridge that fits your playing style better.
Winner: Tie.
Tuners
Both come with regular tuners. The Jackson USA Signature Jeff Loomis Kelly's are Sperzel Die-Cast while the Jackson Pro Series Signature Jeff Loomis Soloist SL7's are Jackson Sealed Die-Cast
Winner: Tie.
Neck Joint
Contrary to popular belief, the difference in sustain and tone that some neck joints give to a guitar is simply unperceivable—if they're all well built. However, some of them do have advantages over the others.
Both have a Neck-Through neck joint. This neck is a lot more resistant and lets builders give the neck joint a more comfortable shape for soloing at the upper frets. The disadvantage is that they're more expensive and that if you damage your neck, you can't simply replace it like with bolt-on necks.
Winner: Tie.
Here is the list of features that were considered when choosing the winner in the Features subcategory:
Jackson USA Signature Jeff Loomis Kelly
- Stainless Steel Frets
- Made in United States
- Expensive Wood
- Locking Nut
- Top Brand Pickups
- Neck-Through Build
- Luminescent Inlay
- Tremolo
- Compound Radius Fretboard
- No Locking Tuners
- No Push Knob or Extra Switch Option
- No Weight Relief
- No 21:1 Tuner Ratio
- No Retainer Bar
- No Strap Lock
Jackson Pro Series Signature Jeff Loomis Soloist SL7
- Expensive Wood
- Locking Nut
- Top Brand Pickups
- Neck-Through Build
- Luminescent Inlay
- Tremolo
- Compound Radius Fretboard
- Strap Lock
- Cheap Fret Wire (NS)
- No Locking Tuners
- Made in South Korea
- No Push Knob or Extra Switch Option
- No Weight Relief
- No 21:1 Tuner Ratio
- No Retainer Bar
Final Build Quality Scores
Playability Comparison
Let's now compare their playability. Bear in mind that the instrument will feel different depending on your hand size and play style. That's why you should always test before buying. But if you can't or want a second opinion on it, we can still take a look at each of the important measurements of the instrument for you. This way, we can predict how easy a guitar might be to play, or how different it will feel compared to the other.
Remember that, even though the difference might seem small, every inch counts when it comes to feeling of the instrument in your hands. Any variation can completely change how comfortable a guitar feels in your hands.
Nut Width
The nut width will affect the separation between strings at the nut. In this comparison, the Jackson Pro Series Signature Jeff Loomis Soloist SL7 has the wider nut with 47.6mm (1.875'') vs 42.9mm (1.688''). This is a 4.7mm (0.187'') difference
This means that it will be more difficult to do bar chords on the Jackson Pro Series Signature Jeff Loomis Soloist SL7, especially closer to the nut. However, it's also easier to play without muting strings accidently. This favors people with big hands.
Scale Length
The scale length is one of the things that influences playability the most. This is the distance between the nut and the bridge and will affect everything from low action allowance, difficulty to perform bends, fret separation, and even tone.
The Jackson Pro Series Signature Jeff Loomis Soloist SL7 has the longest scale: 26.5". The Jackson USA Signature Jeff Loomis Kelly is only 25.5" long. This is a 1'' (25.4mm) scale length difference.
This longer scale means that the strings need more tension to get in tune. This is good if you want to avoid fret buzz, which can happen when the strings are too loose and touch the frets while vibrating. This is especially important when playing in lower tunings. This will also let you reduce the gap between fretboard and strings (low action) to make them easier to press down. However, this higher tension will also make it harder to perform bends and vibratos as the strings will feel stiffer.
This also means that the frets have a longer separation between each other, so this will make it harder for people with smaller hands when playing some chord positions.
Another characteristic of a longer scale is that it makes the guitar sound 'snappier' or brighter. This is due to the extra separation between harmonics and overtones produced by the tension. This influences tone more than any other factor (except the pickups).
Lastly, remember that you can also affect the tension of the strings by changing your string gauge. You can use a thicker gauge for more tension and a lighter one for less tension.
Neck Profile
No single neck shape is better than others. However, most people tend to prefer a thinner necks because it doesn't get in their way when playing fast and most hand sizes can adapt to it pretty well. However, some people still prefer thicker necks for a better grip, especially if they have big hands.
Both the Jackson USA Signature Jeff Loomis Kelly and the Jackson Pro Series Signature Jeff Loomis Soloist SL7 have a D-shaped neck. This is a thin and flat neck that is made for playing fast. If you prefer a neck that doesn't get in your way when soloing, this is the shape you should use. Guitarists that prefer to have a bit more grip won't like this type of neck.
Fretboard Radius
Most guitar fretboards are not flat; they usually have a curve or arc across their width. A curved fretboard will make it easier to perform chords without muting strings, while a flatter one will make it easier to play single notes, which is good for bending and soloing in general. The best fretboards have a compound radius that varies across the fingerboard, but they're not common since they take a lot more work to build.
Both have a compound radius. This means both offer you the best craftsmanship when it comes to fretboard design. You'll have an arc to help you play chords close to the nut, while also having a flat design at the higher frets for faster soloing and easier bends.
Hand Size Comfortability
Everyone has a different hand size, and that's why it's recommended to try a guitar before buying, even if others tell you that it's comfortable to play. However, we can know whether a guitar favors small or large hands just by knowing its exact measurements.
After taking into account the scale length, nut width, neck profile and fretboard radius, we can conclude that both in this comparison favor small hands .
Jackson USA Signature Jeff Loomis Kelly:
Jackson Pro Series Signature Jeff Loomis Soloist SL7:
Fret Size
Both have a Jumbo fret size. This is one of the tallest frets you can get. You won't feel the fretboard when pressing down the strings. It will give you the best sustain and all types of chords will be easier to play. However, you can end up changing the pitch of your notes if you press too hard, which is something people used to feeling the fretboard do when trying Jumbo frets for the first time.
