Acoustic Guitar Tonewoods: An Illustrated Guide
Buying & Setup
Acoustic Guitar Tonewoods
A tour through the woods that give an acoustic guitar its voice — from the everyday spruces and mahoganies to the rare and beautiful exotics — with a look at the grain of each.
Two acoustic guitars can share the same shape, the same strings and the same builder, and still sound like different instruments. A big part of that difference is the wood. Tonewoods — the species chosen for a guitar's top, back and sides — shape its character the way ingredients shape a dish, and understanding them turns a wall of guitars in a shop into a set of meaningful choices.
A quick map before we start. The top, or soundboard, is the single biggest influence on tone — it's the surface the strings actually drive into vibration, so it's almost always made from a light, stiff softwood like spruce or cedar. The back and sides act as the guitar's built-in amplifier, colouring and reflecting that sound; these are hardwoods, and this is where most of the variety lives. We'll start with the most common woods you'll actually encounter, and work our way out towards the rare and exotic.
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Top woods: the engine
The soundboard does most of the tonal heavy lifting. It has to be light enough to vibrate freely yet stiff enough to withstand the considerable pull of the strings, which is why softwoods — spruces and cedars — dominate here. Small differences between them have a real, audible effect on how loud, warm or responsive a guitar turns out to be.
Sitka Spruce
If you've picked up an acoustic guitar, chances are its top was Sitka spruce. It's the most common soundboard wood in the world, and for good reason: it has an excellent stiffness-to-weight ratio, meaning it's light but strong enough to take the pull of the strings while still vibrating freely. Tonally it's the all-rounder — clear, punchy, with a wide dynamic range that rewards both gentle fingerpicking and hard strumming. Pale creamy-tan in colour with straight, even grain, it's the safe, versatile choice that suits almost any style.
Engelmann Spruce
Engelmann is Sitka's gentler cousin. It's whiter, creamier in colour and a touch less dense, which gives it a softer, more open voice with a sweeter top end. Because it's less stiff, it produces a little less volume and headroom — play it hard and it can lose composure — so it's best suited to players with a lighter, more delicate touch who want a more refined, complex sound at moderate volume.
European Spruce
Also called German, Italian, Alpine or Carpathian spruce, this is the same species prized for fine violins, including Stradivarius instruments. It's whiter than Sitka and highly responsive, with bright trebles, a warm bass and strong projection that together give a very dynamic, articulate sound. It's a favourite for high-end classical and fingerstyle guitars where clarity and nuance matter most.
Adirondack (Red) Spruce
Adirondack, or red spruce, was the standard top wood on pre-war American guitars before it was heavily logged, and it's since made a premium comeback. It's the stiffest and strongest of the spruces, which translates to huge volume, headroom and a bell-like ring. It takes a hard-driving strummer to get the best from it — play it aggressively and it just keeps giving, where a softer top would compress. Loud, bold and dynamic.
Western Red Cedar
Cedar is the classic alternative to spruce, especially on classical and fingerstyle guitars. It's noticeably darker — a warm cinnamon-to-honey brown — and less dense, which gives it a darker, warmer tone rich in overtones. Crucially, it responds beautifully to a light touch, sounding full and lively even at low volume, which is exactly why fingerpickers love it. The trade-off is less headroom: push it hard and it reaches its ceiling sooner than spruce.
Redwood
Redwood is similar in character to cedar — warm and rich in overtones — but usually stiffer and heavier, which brings out stronger fundamentals, particularly in the low end, and a wider dynamic range. It works especially well on small and medium-bodied guitars and blooms into a full spread of overtones when played with energy. A characterful, slightly less common choice for players who want cedar's warmth with a bit more punch.
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Back and side woods: the amplifier
The back and sides form the guitar's soundbox and act as a sympathetic resonator — a built-in amplifier that boosts and cuts frequencies as the sound bounces around inside. If the top is the engine, these woods are the bodywork that shapes the final voice. Here they run from the everyday classics to the rare and exotic.
Mahogany
Now we move to the back and sides, which act as the guitar's built-in amplifier, colouring and reflecting the sound the top produces. Mahogany is one of the two great traditional choices. Recognisable by its reddish-brown colour, it's a stiff, dense hardwood that gives a warm, punchy, focused sound with a strong midrange and less harmonic complexity than rosewood — often described as 'woody' or 'dry'. That directness makes it superb for recording and for cutting through a mix, and it suits blues, folk and country beautifully. It's occasionally used for tops too, where it gives a similarly punchy, midrange-forward voice.
East Indian Rosewood
Rosewood is mahogany's counterpart and the other pillar of acoustic tone. East Indian rosewood — dark brown with streaks of purple, grey and red — is prized for a rich, complex sound: deep, resonant basses and sparkling, bell-like trebles, with lush overtones and long sustain. It's the go-to for players who want a big, hi-fi, harmonically rich voice, and it pairs wonderfully with a spruce or cedar top. It's dense and stable, which also makes it relatively cooperative to build with.
Sapele
Often called African mahogany, sapele is a sustainable, faster-growing wood that does almost everything mahogany does, with a little extra treble zing and top-end shimmer thanks to its slightly higher density. Its tone is balanced and consistent across the range, and it frequently shows an attractive ribbon-like banding of light and dark in the grain. You'll find it on many well-made budget and mid-range Martins and Taylors — a lot of guitar for the money.
Maple
Maple is the transparent one. Rather than adding much colour of its own, it lets the top and the player's touch come through, with a bright, clean, focused tone, excellent note separation and less overtone content than rosewood or mahogany. That clarity, plus its natural midrange scoop, makes it a favourite for live players and big-bodied guitars, since every note stays audible in a band. It's also stunning to look at, with dramatic flame, curl and quilt figuring that shimmers in the light.
Walnut
Walnut has quietly become popular, and it's easy to see why: tonally it sits right between rosewood and mahogany. It gives an even, balanced response across the whole frequency range — the warm, earthy body of rosewood combined with the clear, transparent focus of mahogany. Initially a little bright and tight, it opens up with playing time into a rich, resonant midrange. A characterful, earthy-brown choice that flatters a wide range of styles, and it looks especially good under a cedar top.
Koa
Koa is a stunning Hawaiian wood, traditionally the wood of the ukulele, with a gorgeous reddish-gold colour and deep curl and flame figuring that makes it a favourite for custom and limited-edition builds. Its real trick is that it evolves: a new koa guitar sounds bright and tight, almost like maple, but as it's played in over months and years it opens up into a warm, rich midrange with a touch of sparkle. It offers great midrange projection and a natural, compressed sweetness. It's used for tops as well as back and sides, sometimes both at once.
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Exotic and rare woods
Beyond the staples lies a world of exotic hardwoods — some prized for a distinctive voice, most for jaw-dropping looks, and a few, sadly, for their scarcity. Several are protected species, so buying them means dealing with trade documentation. These are the woods you'll find on custom builds, limited editions and flagship instruments.
Ovangkol
Now into the more exotic woods. Ovangkol (also spelled ovankol) is an African relative of rosewood that has become a popular alternative to it. It delivers the deep bass and articulate treble you'd expect from the rosewood family, but adds a fuller, warmer midrange — a bit of mahogany's body layered under rosewood's sparkle. Greenish-brown with darker streaking, it's a well-balanced, slightly unusual choice that offers a lot of the rosewood magic.
Cocobolo
Cocobolo is a dense, hard tropical rosewood from Central America, and it's as beautiful as it is punchy — ranging from deep red to orange-brown with dramatic dark swirling figure, and famous for changing colour after it's cut. Tonally it's fast, responsive and articulate, with a bright, reflective treble emphasis; think of it as sitting near koa but resonating a little deeper in the low end. It's more common than its exotic looks suggest, and a striking centrepiece on higher-end guitars. Note that it's CITES-regulated, so trade requires proper documentation.
Granadillo
Granadillo is often used as a substitute for East Indian rosewood, which it resembles closely in both tone and looks. It offers a similar projecting, complex, balanced voice, and comes in a wide spectrum of colours — violets, oranges, reds and browns — sometimes with the desirable black lines you see in cocobolo and Brazilian rosewood. A characterful, less expensive way to get much of the rosewood experience.
Ziricote
Ziricote is one of the most visually spectacular tonewoods there is, with a distinctive 'landscape' or 'spider-web' figure in shades of grey, olive-green and brown shot through with black. Very dense, its tone is frequently compared to Brazilian rosewood — deep, resonant and complex — but its look is entirely its own, trading Brazilian's reds for cooler greys and greens. A showpiece wood for high-end and custom instruments.
Brazilian Rosewood
The most revered back-and-side wood of all, Brazilian rosewood is the stuff of pre-war legend: deep, powerful basses, a mature complex midrange and sweet, singing trebles, with a bell-like clarity that many consider the benchmark all other rosewoods are measured against. It's now in very short supply and strictly protected under CITES, so it's reserved for the most expensive instruments and vintage guitars — genuinely rare, and priced accordingly.
African Blackwood
African blackwood is the densest member of the rosewood family — so dense it barely floats — and one of the most striking, with an almost flat-black or very dark purple colour. It carries all the tonal hallmarks of Brazilian rosewood: deep, powerful lows, rich overtones and superb clarity and projection. Long used for clarinets and oboes, it makes a spectacular, and expensive, guitar for players chasing the ultimate rosewood-family voice.
Australian Blackwood
Confusingly named, Australian blackwood isn't black at all — it's an acacia, the same family as Hawaiian koa, and looks the part with warm golden-brown colour and marble-like wavy figure. Tonally it behaves much like koa or mahogany: bright and clear when new, with a strong, dry midrange, developing warmth and richness as it's played in. Strong volume and projection make it a versatile, characterful and more sustainable choice.
Bocote
Bocote is unmistakable: a warm tobacco-brown with dramatic parallel black lines and swirling multicoloured streaks. Beyond the looks, it's known for deep, powerful basses and a big, bold overall sound with plenty of projection. A dense, eye-catching exotic that makes a real statement both visually and sonically.
Wenge
Wenge (pronounced 'wen-gay') is a very dark chocolate-brown African hardwood with a distinctive coarse, straight grain of near-black lines. Dense and stiff, it produces a strong, tight low end with clear, reinforcing mids and highs that add fatness to the upper registers. More common on necks and fingerboards, it makes a distinctive, dark-toned choice for back and sides too.
Ebony
Ebony deserves a mention even though you'll rarely see it as a body wood — it's the traditional fingerboard and bridge material, and one of the hardest, densest woods used on a guitar. Jet-black (sometimes with faint brown streaking), it resists wear superbly, feels glassy-smooth under the fingers, and lends a snappy, articulate attack to fretted notes. Where spruce and rosewood shape the guitar's voice, ebony shapes how it feels to play.
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So how much does the wood really matter?
A dose of honesty to finish. Wood matters — but it's one ingredient among several. Body shape, bracing, the quality of the build, the strings and, most of all, the player's own hands shape a guitar's sound at least as much as the species of timber. Two guitars in the same wood from different makers can sound worlds apart, and even two pieces cut from the same tree are never identical.
The tendencies described here are real and useful — spruce is bright and versatile, mahogany warm and punchy, rosewood rich and complex — but treat them as leanings, not laws. The colour swatches above capture how each wood looks; how it sounds in a finished guitar depends on everything around it. The only way to truly know a guitar is to play it. Use this guide to understand what you're looking at and to build a shortlist, then trust your ears and your hands to make the final call.
An illustrated guide to acoustic guitar tonewoods — the top, back and side woods that shape a guitar's sound, from common spruce and mahogany to exotic cocobolo, ziricote and Brazilian rosewood.