The top wood of an acoustic guitar plays a significant role in defining the instrument’s voice and response. Each species offers a unique set of physical properties—stiffness, weight, and density—that influences how the guitar projects and how it feels to the player’s hands. At Collings, we offer a variety of top wood choices to best match the player’s unique style and approach, each set carefully selected and individually hand-voiced by our head luthier to work with the instrument’s body design and accompanying features.
Sitka Spruce
(Picea sitchensis) The industry standard for a reason. Sitka is a versatile “all-around” wood that is readily available and handles a wide range of playing styles. It has a high strength-to-weight ratio, providing a clear, balanced tone with plenty of volume. Whether you are a heavy strummer or a light fingerstyle player, Sitka remains consistent and reliable.
Adirondack Spruce
(Picea rubens) Often called “Red Spruce,” this was the primary top wood for pre-war acoustic guitars. It offers a round, full tone that is punchy and powerful, yet still responds well to lighter playing. Adirondack is also known for its high headroom, which means you can play it very hard without the sound breaking up or becoming muddy. This makes it a favorite among bluegrass flatpickers.
European / German Spruce
(Picea abies) Commonly sourced from the Alps, European Spruce shares some of the headroom of Adirondack but adds a noticeable sweetness and complexity to the high end. It is highly responsive to a light touch, producing piano-like overtones. It is an excellent choice for players who want a more sophisticated, “classical” shimmer in their steel-string guitar.
Engelmann Spruce
(Picea engelmannii) Engelmann is noticeably softer and less stiff than Sitka. It produces a mature tone right out of the box with a rich midrange and a sweet high end. Because it has a lower volume ceiling, it is ideal for fingerstyle players or those with a lighter touch seeking a small- to medium-sized guitar.
Torrefied / “Baked” Spruce (we offer Adirondack and Sitka)
Torrefaction is a specialized heat-treatment process that removes oils and resins, resulting in a top that is extremely stable and lightweight. A torrefied top is tonally clear and crisp with a quick response, and its stable nature means it is particularly well suited to situations where temperature and humidity will change regularly.
Old-Growth Sitka Spruce
The old-growth Sitka spruce we offer is reclaimed from a variety of sources, including bridges, fish traps, and buoyancy logs from logging camps. Since it was originally cut long ago, it is representative of very high-quality Sitka trees and has also aged naturally over the decades. This results in an especially warm, clear, and open tone.
“Q” Spruce
Q tops are typically Sitka or Lutz spruce supplied by our wood vendor, Pacific Rim Tonewoods, that have been sonically graded using advanced acoustic science. This process determines the damping quality of that specific set of wood, which affects resonance, responsiveness, sustain, volume, and consistency. Learn more here: What Are Q Spruce Guitar Tops?
Mahogany
(Swietenia macrophylla) Unlike spruces, which are softwoods, Mahogany is a hardwood. A mahogany top produces a very dry and fundamental tone with few overtones. It is punchy and direct with a warm midrange that sits well in a recording mix. It can feel stiff initially but mellows into a woody, bluesy character over time.
Western Red Cedar
(Thuja plicata) Cedar is significantly softer and less dense than spruce. It is highly touch-sensitive, meaning you don’t have to work hard to get a big sound out of it. It offers a dark, lush warmth and is a favorite for fingerstyle players. However, it lacks the “headroom” of spruce and will distort if picked with a heavy hand.
Redwood
(Sequoia sempervirens) Redwood sits in the realm between Cedar and spruce. It shares the warmth and immediate response of Cedar but allows for more volume and snap. It is a great middle ground for players who want the dark tonal palette of Cedar but occasionally need to dig in with a pick.