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Guild OM-120 Natural
Guild M-20 Natural
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Playability
73
Sound
84
Build
70
Value
81
Score
76
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Playability
78
Sound
84
Build
80
Value
76
Score
81
FIND IT ON:
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Side to side spec comparison >

Guild OM-120 Natural vs M-20 Natural

Reasons to Get
Guild OM-120 Natural over M-20 Natural

Scale Length
25.5'' (647.7mm) vs 24.75'' (628.7mm)
Lower action and brighter natural tone
Fretboard Radius
16'' (406.4mm) vs 12'' (304.8mm)
Flatter fretboard makes it easier to play single notes and bend
Value Score
81 vs 76
Better price/quality relationship

Reasons to Get
Guild M-20 Natural over OM-120 Natural

Country of Manufacturing
United States vs China
Built with higher quality standards
Release Year
2021 vs 2017
From a more recent year
Scale Length
24.75'' (628.7mm) vs 25.5'' (647.7mm)
Easier bending, shorter fret separation and warmer natural tone
Fretboard Radius
12'' (304.8mm) vs 16'' (406.4mm)
Easier to play chords without muting strings

Other Key Differences
Guild OM-120 Natural vs M-20 Natural

Bridge Material
Rosewood vs Indian Rosewood
Different Bridge Material

Shared Features
Guild OM-120 Natural vs M-20 Natural

Back Material
Mahogany
Same Back Material
Sides Material
Mahogany
Same Sides Material
Saddle Material
Bone
Same Saddle Material
Body Wood
Mahogany
Same Body Wood
Neck Wood
Mahogany
Same Neck Wood
Fretboard Wood
Rosewood
Same Fretboard Wood
Headstock
3-3
Same Headstock
Nut Material
Bone
Same Nut Material
Strings
6
Same playing style
Body Type
Hollowbody
Warm tone, lighter and acoustic sound
Switch Positions
0
Same pickups versatility
Volume Knobs
0
Same volume control
Tone Knobs
0
Same tone control
Number of Frets
20
Same maximum octave
Neck Thickness at 1st Fret
0.787'' (20mm)
Same neck comfortability
Neck Thickness at 12th Fret
0.945'' (24mm)
Same neck comfortability
Nut Width
1.75'' (44.5mm)
Same string separation at the nut
Paint Finish
Poly
Resistant paint that ages well
Bridge
Fixed
Good sustain and needs no set-up
Neck Profile Type
C
Comfortable neck that works for most people
Type of Frets
Medium
You'll feel the fretboard when pressing down the strings

Common Strengths

  • Solid Top Wood
  • Solid Side Wood
  • Solid Back Wood
  • High-Quality Nut
  • Expensive Wood

Common Weaknesses

  • Pickup Alter Switch/Knob
  • Locking Tuners
  • High-Quality Frets
  • Compound Radius Fretboard
  • Luminescent Sidedots
  • Strap Lock
  • Top Pickup Brand
  • 21:1 Tuner Ratio
  • Active/Passive Preamp

Price History Comparison

SET PRICE ALERT

Guild M-20 Natural Prices

SET PRICE ALERT

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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

Guild OM-120 Natural
  • Comfortable shape
  • Easy-to-use bridge
  • Tall frets
  • Comfortable neck
  • Comfortable fretboard
  • Narrow nut
  • Short scale
  • Soft Strings
  • Locking tuners

New Player Friendliness

Guild M-20 Natural
  • Comfortable shape
  • Easy-to-use bridge
  • Tall frets
  • Comfortable neck
  • Comfortable fretboard
  • Narrow nut
  • Short scale
  • Soft Strings
  • Locking tuners

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.

Sound Quality Comparison

The most important thing that will determine the tone of an acoustic guitar is the wood. Let's take a look at the differences between both .

Woods Used in Both

Mahogany wood pattern used for guitar building
Mahogany
Rosewood wood pattern used for guitar building
Rosewood

Mahogany is a fairly rare wood nowadays. It's used mostly for bodies due to its relatively lightweight. Gibson popularized it with their Les Paul guitars during their golden years, so this wood has a lot of good reputation behind it. The most expensive type comes from South America and it's still used by Gibson even today. Find out more about Mahogany.

Rosewood is an almost purple-looking wood that is used mainly for fretboards since it's heavy, rare, and expensive. It's sometimes used on acoustic guitar bodies to create stronger warm tones. Find out more about Rosewood.

Winner: Tie.

Electronics

Neither of them come with electronics that allow you to connect them to an amp. This makes them completely acoustic, so you'll need to use an external mic to record with them or play live.

Winner:Tie.

Final Sound Quality Scores

Guild OM-120 Natural
Sustain 85
Versatility 80
Tuning Stability 70
Sound 84
Guild M-20 Natural
Sustain 85
Versatility 80
Tuning Stability 70
Sound 84

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 Guild OM-120 Natural compares to the Guild M-20 Natural.

Country of Origin

The manufacturing country can tell a lot about the build quality of an instrument. The Guild OM-120 Natural is built in China while the Guild M-20 Natural is made in United States.

China has a bad reputation when it comes to building quality. However, times have changed and now respectable brands use China's cheap labor to build good instruments for a lower price. Don't discount a guitar only because it was built in China, but also expect more quality from countries like 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.

Winner: Guild M-20 Natural

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 Bone nuts. It's a type of nut found in high-quality instruments. They sound similar to Ivory since they give a lot of sustain and a bright sound (at least when striking open strings). The only problem they can run into is that you may get a bone piece that simply doesn't sound as well as others because that's just how natural materials are.

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.

Unfortunately, none of them come with stainless steel frets.

Winner: Tie.

Tuners

Both come with regular tuners. The Guild OM-120 Natural's are Guild Vintage 18Open Gear – Nickel while the Guild M-20 Natural's are Guild Deluxe Vintage Open Gear with Cream Oval Buttons

Winner: Tie.

Here is the list of features that were considered when choosing the winner in the Features subcategory:

Strengths & Weaknesses
Guild OM-120 Natural
  • Expensive Wood
  • Bone Nut
  • Bone Saddle
  • Solid Top Wood
  • Solid Side Wood
  • Solid Back Wood
  • Cheap Fret Wire (NS)
  • No Locking Tuners
  • Made in China
  • No Top Brand Pickups
  • No Electronics
  • No Compound Radius Fretboard
  • No 21:1 Tuner Ratio
  • No Strap Lock
Strengths & Weaknesses
Guild M-20 Natural
  • Made in United States
  • Expensive Wood
  • Bone Nut
  • Bone Saddle
  • Solid Top Wood
  • Solid Side Wood
  • Solid Back Wood
  • Cheap Fret Wire (NS)
  • No Locking Tuners
  • No Top Brand Pickups
  • No Electronics
  • No Compound Radius Fretboard
  • No 21:1 Tuner Ratio
  • No Strap Lock

Final Build Quality Scores

Guild OM-120 Natural
Quality of materials 86
Features 65
Quality Control 60
Build Quality 70
Guild M-20 Natural
Quality of materials 86
Features 65
Quality Control 90
Build Quality 80

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

Guild OM-120 Natural Nut Width
Both Guitars Have The Same Nut Width

The nut width will affect the separation between strings at the nut. In this comparison, both have a nut width of 44.5mm (1.75'').

This is within the most common range of nut widths for a 6-string guitar. It offers a good balance of string separation at the nut. It's the size that most guitarists prefer as it gives them just enough space to play open chords without muting the strings, but without spreading the strings too wide and making bar chords difficult to perform.

Scale Length

Guild OM-120 Natural's Scale Length
Guild OM-120 Natural's Scale Length
Guild M-20 Natural's Scale Length
Guild M-20 Natural's 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 Guild OM-120 Natural has the longest scale: 25.5". The Guild M-20 Natural is only 24.75" long. This is a 0.75'' (19.1mm) 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

Guild OM-120 Natural Neck Profile
Both guitars have the same 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 Guild OM-120 Natural and the Guild M-20 Natural have a C-shaped neck. This is what you'll find in most modern guitars. Most people feel like the thickness of a C neck is simply the less intrusive one for playing fast, while at the same time allowing you to grab the neck easily for resting if you want to.

Fretboard Radius

Guild OM-120 Natural Fingerboard Radius
Guild OM-120 Natural's Fingerboard radius
Guild M-20 Natural Fingerboard Radius
Guild M-20 Natural's Fingerboard 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.

In this case, the Guild M-20 Natural's fingerboard radius is smaller, which means it's more curved than the Guild OM-120 Natural's. This extra arc will make playing chords easier in this model. You won't be as likely to mute the strings, especially if you have big hands. However, playing single notes and bending will be easier on the Guild OM-120 Natural.

Still, both tend to favor soloing over chords, so if you're looking for a guitar for playing rhythm, you might want something else with a radius closer to a Stratocaster's 9.5''.

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 .

Guild OM-120 Natural:
Big Hands
Small Hands
Guild M-20 Natural:
Big Hands
Small Hands

Fret Size

Guild OM-120 Natural and Guild M-20 Natural Frets Size
Both have a similar Medium fret size

Both have a Medium fret size. If you like feeling the fretboard when you play, but also appreciate some easiness to press down the frets, this size offers a good balance for that.

Final Playability Scores

Guild OM-120 Natural
Bending & Vibrato Ease 75
Chord Playability 65
Solo Playability 80
Playability 73
Guild M-20 Natural
Bending & Vibrato Ease 85
Chord Playability 70
Solo Playability 80
Playability 78

Specs Side-by-Side

Guild OM-120 Natural vs M-20 Natural
General Guild OM-120 Natural M-20 Natural
Brand: Guild Guild
Year: 2017 2021
Strings: 6 6
Made in: China United States
Series: Westerly Collection Guild Usa
Colors: Natural Natural, Burst
Left-Handed Version: No No
Body
Type: Hollowbody Hollowbody
Body Material: Solid African Mahogany Solid African Mahogany
Sides Material: Mahogany Mahogany
Back Material: Mahogany Mahogany
Bridge: Rosewood Indian Rosewood
Neck
Neck Joint: Set Set
Tuners: Guild Vintage 18Open Gear – Nickel Guild Deluxe Vintage Open Gear with Cream Oval Buttons
Fretboard: Rosewood Indian Rosewood
Neck Material: African Mahogany Mahogany
Decoration: 5mm Dots – Mother-Of-Pearl Pearloid Dots
Scale Size: 25.5" 24.75"
Shape: Acoustic C Shape Acoustic C Shape
Thickness: 1st Fret: 0.787'' (20mm) - 12th Fret: 0.945'' (24mm) 1st Fret: 0.787'' (20mm) - 12th Fret: 0.945'' (24mm)
Frets: 20 Medium Nickel Silver 20 Medium Nickel Silver
Fretboard Radius: 16" 12"
Nut: Bone Bone
Nut Width: 44.5mm (1.75'') 44.5mm (1.75'')
Electronics
Bridge Pickup: