Strings are the cheapest upgrade you can make to a classical guitar — and the one most players underestimate. A fresh set, well matched to your instrument, can change projection, comfort and tone color more than most people expect. After fitting and adjusting thousands of guitars at Siccas, here's how we think about choosing strings, without the marketing noise.
Start with tension — it changes how the guitar feels and sounds
Classical strings come in tension grades, usually labelled low (light), normal (medium), high and extra-high (hard). Tension is the lever most players overlook:
- Lower tension feels softer under the fingers, is easier to press, and gives a warmer, more relaxed tone — but can sound loose and buzz if your action is low.
- Higher tension gives more volume, projection and attack, and a firmer feel — but is more tiring and puts more stress on the top.
For most players, normal or high tension is the sweet spot. If your hands tire quickly or your guitar already sounds bright, try lower tension; if you want more power and your instrument can take it, go higher. There is no "best" tension — only the right one for your hands and your guitar.
Material: nylon vs. carbon trebles
The three treble strings (G, B, E) come in two main materials:
- Clear nylon — the classic, warm, round sound. Forgiving and traditional.
- Carbon / fluorocarbon — denser, thinner for the same pitch, with more projection, clarity and sustain. Brighter and more focused; great for cutting through, but can sound harsh on an already-bright guitar.
The basses (D, A, E) are almost always silver-plated copper wound over a nylon core; differences here are subtler (and some "polished" basses reduce finger squeak).
Match the strings to your guitar, not the other way around
This is the part generic guides miss. Strings interact with the instrument:
- A cedar-top guitar is typically warm and quick to respond — carbon trebles or higher tension can add clarity and projection.
- A spruce-top guitar is often brighter with more headroom — warm nylon or normal tension can round it out.
If you're unsure what your top is doing, our guide to spruce vs. cedar tops explains the difference you're hearing.
The established string makers
You can't go wrong starting with a respected maker and adjusting from there. Common, proven options include La Bella and Knobloch, Savarez (Alliance/Cantiga, Corum, the classic 500 series), Augustine, Hannabach (815, Goldin), Pick one set, play it for two weeks, and note what you wish were different (more volume? warmer? easier?). That tells you what to change next.
How often should you change strings?
Sooner than most people think. Trebles lose brilliance and intonation after a few weeks of regular playing; basses go dull and "thuddy" once the winding clogs. For a serious player: every 1–3 months, or before a performance or recording. If your guitar suddenly sounds dull and won't tune cleanly at the 12th fret, the strings are usually the cause.
Fitting and "tuning in"
New strings — especially carbon and the basses — stretch a lot at first and will keep going flat for a day or two. Stretch each string gently by hand after tuning, retune often, and give a fresh set a couple of days to settle before judging the tone. Don't write off a string set on day one.
Frequently asked questions
What tension should a beginner use?
Normal tension is the safe default — balanced feel and tone. Try low tension only if pressing the strings is tiring; high tension once you want more volume.
Are carbon strings better than nylon?
Not better — different. Carbon offers more projection and clarity; nylon is warmer and more traditional. Choose for the sound you want and how your guitar already sounds.
How long do classical guitar strings last?
Roughly 1–3 months of regular playing. Trebles fade in brightness and intonation; basses go dull. Change before important playing.
Can I put steel strings on a classical guitar?
No. A classical guitar is built for the lower tension of nylon; steel strings can damage the top and bridge. Always use nylon/carbon classical sets.
Why won't my guitar stay in tune with new strings?
New strings stretch. Tune, stretch gently, repeat, and allow a day or two to settle — it's normal, not a fault.
Choosing your first instrument? Read our honest beginner's buyer's guide, or browse our classical guitars →
