Acoustic guitars can sound bright, full, resonating, and beautiful. However, they should never sound tinny or toyish. Tinny strings typically mean there’s something wrong with the strings or the instrument. That being said, there are various reasons your acoustic guitar might sound more tinny than usual.
Your acoustic guitar sounds tinny because the strings need to be broken in, they’re too thin for your liking, or the action is too high. Other causes include low-end guitars, low action, and recording equipment issues. Make sure you know how to adjust your amplifier and digital audio workstation.
Throughout this article, you’ll discover why your acoustic guitar sounds so tinny and what you can do about it. You’ll also find out about a few ways to tweak your digital equipment to work in your favor.
Related: why is your acoustic guitar so quiet? causes and fixes and how to choose the right size acoustic guitar for you.
New Strings Need to Be Broken In
Your guitar strings need to be broken in to prevent them from sounding tinny. Sound Adventurer explains brand-new strings have a metallic sound because they haven’t been stretched and used. The good news is that the quickest way to solve this common problem is to play your acoustic guitar more often.
Breaking in the strings loosens the metallic composition. When they’re too tight and new, they carry the metal noise. However, they quickly dull to the bright, warm sound people know and love in acoustic guitars. Play your instrument several times a week to break in the strings. You can stretch the strings manually.
To bend your guitar strings, hold the top of a string and push it up and down with the other hand. Do this to each string, tune the instrument, then repeat the process. Stretching the strings will slightly affect the tuning, so it’s essential to tune them after stretching them. This includes those who use bending techniques to alter the tone while playing.
Low-Quality Guitars Sound Tinny
Low-end guitars aren’t the best for those looking for clear, crisp sound and high-end intonation. If your guitar is cheap, you should expect it to sound toyish and tinny. This unwanted noise is very difficult to correct. In fact, the only solution is typically to get a brand-new acoustic guitar that’s a bit better and has high-quality materials.
Here’s a list of reasons low-quality acoustic guitars sound tinny:
- The guitar’s body is made of thin, cheap materials. Thin acoustic guitars don’t produce as much bass as thicker, full guitars. The thinner construction can make the guitar produce a tinny sound that can’t be removed since it’s caused by the shape and size, not the materials.
- The nut, bridge, and other parts aren’t high-quality. Each component on an acoustic guitar directly affects how it sounds. If you have a high-end guitar with cheap parts, it’ll sound tinny or muddy. Make sure the nut and bridge are made with stock materials, bone, aluminum, and so on.
- The acoustic guitar might’ve come with low-end strings. If you bought a budget-friendly acoustic guitar, the manufacturer likely provided low-cost strings. The good news is that you can add a high-end set of strings for less than $10 in most places. Head to a local shop to find out which ones suit your guitar.
- There are holes or scratches inside the guitar. An acoustic guitar’s body changes its resonance, sustain, and volume. If there are holes, scratches, and broken parts in the guitar, there’s no doubt it’ll sound different. Too many scratches will make the guitar sound sharp and hollow, which sounds quite tinny.
- The inner parts are loose. Many acoustic guitars have pickups, built-in tuners, and other internal components. If anything in the guitar is loose, it’ll bounce around and change the way the strings vibrate. These vibrations turn from circular to ovular, which makes them buzz and sound tinny.
Thin Strings Have More Treble
If you have light strings, they’ll sound brighter and higher than you might be used to. Upgrade your strings to be a bit thicker if you want to increase the bass and reduce the treble. Again, more treble typically means a slightly more tinny sound. A 0.08” gauge string will be much higher and tinnier than a 0.012” gauge string.
When you switch to thick strings, you might have to adjust your playstyle. Heavy strings are harder to press. We suggest going up one or two gauges instead of grabbing the thickest, heaviest strings you can get your hands on. Once you’re used to the new strings, you can decide if you want to go higher or lower.
The Action Is Too Low
Low action and high action cause numerous acoustic guitar problems. If your guitar looks bent inward or outward, the truss rod needs to be adjusted. Contrary to popular belief, the truss rod isn’t the only part of the guitar’s action. However, it’s one of the most influential pieces of the puzzle. Adjusting will often instantly prevent buzzing and tinny sounds.
Follow these instructions to fix a low action on your acoustic guitar:
- Adjust the truss rod with an Allen key. The truss rod plays a major role in the guitar’s action. When the truss rod is too tight, the guitar’s neck will look bowed. When it’s too loose, the guitar will be bent outward. The goal is to rotate the adjustment nut with the Allen key until the guitar’s neck is flat without buzzing the strings.
- Check the saddle and nut. The saddle holds the strings at the base over the bridge. If the action is too low, the saddle might need to be replaced. The same rule applies to the nut at the top of the strings. These parts slowly wear down from using tight strings and moving the nut and saddle too much.
- Make sure the bridge pins are secured. The bridge pins hold the strings onto the bridge. If the pins are loose, they’ll cause the strings to buzz against the saddle. It can also make the strings buzz against the frets if they’re too low. The pins should be flush with the bridge.
- Fix the tuning pegs if necessary. Loose tuning pegs can make the strings buzz against the nut at the top of the acoustic guitar’s neck. Tuning pegs gradually loosen from the string’s constant tension. You can unscrew the tuning pegs with a screwdriver, but make sure you remove the strings beforehand.
- Monitor the bridge. The bridge supports the pins, strings, and saddle. If the bridge falls off or becomes misaligned, everything on the guitar won’t work. The bridge should be centered and secured to the guitar with an adhesive. Take it to a guitar repair shop rather than DIYing the repair.
Your Guitar’s Pickup Is Misaligned
If the pickup is too close to the neck, your guitar will undoubtedly sound tinny. Many acoustic guitars have the pickup closer to the bridge because it highlights the bass tones. However, DIY installations could place the pickup in the wrong location. Furthermore, slanting the pickup will increase the treble and decrease the bass.
If you have a pickup in your guitar, make sure it’s not dangling or loose. Much like the other loose components listed on this post, a dangling or loose pickup causes several sound issues. All of the wires need to be tightly secured to the inside of the guitar with zip ties (or whatever adhesive you choose).
Your Recording Equipment Is Malfunctioning
According to Strum Like a Pro, your recording equipment directly impacts your acoustic guitar’s tinny, muddy sounds. If your guitar sounds too dull or sharp, there’s a high chance that your recording gear has an error or two. The good news is that all recording problems can be fixed quite quickly if you know where to start.
Try these suggestions to fix this common cause of tinny acoustic guitar noises:
- Make sure all of your cables are completely connected (and that you have the right cables for the acoustic guitar). Loose cables will alter your recording equipment. Some acoustic guitars need specific cables, so it’s important to ensure that you have the correct connections beforehand.
- Consider the audio interface you’re using (or lack thereof). A high-quality audio interface will provide high-end, clear sounds. If you use a cheap AI, you should expect a