Undersaddle vs Soundhole Pickups: Which is Best?

Undersaddle Pickups: How They Work

Undersaddle pickups use a piezo element that sits beneath the guitar's saddle. When the string vibrates, it changes the pressure on the saddle, and the piezo element converts that mechanical stress into an electrical signal. Because the pickup is positioned directly under the strings, it captures the attack and the string-to-string balance with remarkable clarity. This design is a standard choice for acoustic-electric guitars, as it does not require any modification to the top and leaves the body resonance mostly untouched.

To get a full-bodied amplified tone, undersaddle pickups are usually paired with a preamp. Many preamps, such as the Fishman systems described in Martin's electronics guide, include controls for volume, tone, and a phase switch. The phase switch reverses the polarity of the signal, which can be used to reduce feedback at high stage volumes and to improve bass response when needed. Some systems also incorporate a blend control that mixes the undersaddle signal with an internal microphone or an imaging processor to create a more 'mic'd' sound, as seen in the Fishman Aura VT Blend.

Because the pickup is mounted inside the guitar, installation is invasive. It typically requires removing the saddle, routing a channel in the bridge, and installing an output jack in the end block. This job is best left to a professional luthier, especially on a high-end instrument. However, once installed, the pickup is invisible from the outside and does not interfere with your playing or the guitar's natural acoustic voice.

Soundhole Pickups: Magnetic Ease

Soundhole pickups are magnetic devices that attach to the guitar's soundhole, either by clamping to the edge or by resting on the top. They work on the same principle as electric guitar pickups: a magnetic field interacts with the vibrating strings, inducing a small current in a coil. This makes them sensitive to the string's motion rather than the body's resonance, which is why they are often described as delivering a warmer, more focused tone.

The major advantage of a soundhole pickup is its simplicity. You can install it yourself in seconds without any tools or permanent changes. It clamps gently over the soundhole and can be removed just as easily, making it a perfect choice for players who want to amplify a vintage guitar, a rental instrument, or a guitar they plan to sell later. Many models come with a volume or tone control mounted on the pickguard, so you can make quick adjustments without reaching for an external preamp.

The downside is that magnetic pickups only 'hear' the metal string, not the air moving inside the guitar. This means they tend to sound less 'acoustic' and more like an electric guitar, with a rounder attack and less percussive detail. Some players love this for country, blues, or other genres where a warm, mid-forward tone is desired. Others find it too synthetic for fingerstyle or classical playing. If you are considering this route, it's worth reading about guitar pickups to understand the broader range of options.

Tone: Bright and Articulate vs. Warm and Mellow

The two pickup types produce distinctly different amplified tones. Undersaddle pickups capture the high-frequency transient of the string strike, which gives them a bright, punchy, and highly articulate sound. They excel at fingerpicking where every note needs to cut through a mix, and they handle flatpicking with a crisp, defined attack. Some players describe the tone as slightly 'quacky,' especially in the midrange, but modern preamp systems with tone controls can smooth out that characteristic.

Soundhole pickups, by contrast, emphasize the fundamental frequency of the string and roll off some of the overtone content. The result is a warmer, rounder, and more sustained sound that blends well in a band context. If you are playing rock, blues, or singer-songwriter material where the acoustic needs to sit under a vocal or other instruments, a soundhole pickup can be a great choice. It can also be paired with an acoustic guitar simulator pedal to add back some of the natural body resonance. The wood and construction of your guitar also play a large role; see our guide to tonewoods and sound for more details.

It is important to remember that the guitar's own wood and construction play a large role in whatever pickup you use. As Martin's wood guide explains, different top woods like spruce, mahogany, or cedar shape the volume, attack, and tonal balance. The body size also matters: a larger dreadnought or jumbo body (as described in Martin's acoustic guitar types) will produce a boomier low end regardless of pickup, while a smaller concert or parlor body will be more balanced and easier to EQ.

Feedback and Live Performance

Feedback is the bane of any amplified acoustic. When the guitar's body vibrations cause the strings to vibrate sympathetically, a loop can form between the pickup and the speaker. Undersaddle pickups are relatively feedback-resistant because they do not sense the air pressure inside the body as a microphone would. The piezo element only responds to direct pressure from the strings, so it is less likely to pick up the roar of a stage monitor.

Soundhole pickups are more prone to feedback because they are essentially a magnetic pickup that also picks up the body's resonance to some degree. As the body vibrates, the strings move through the magnetic field, creating a stronger output that can feed back at high volumes. This is especially true in large-bodied guitars like dreadnoughts and jumbos. To combat this, many preamps include a phase switch, as noted on the Fishman MX-T and LR Baggs Anthem systems in Martin's electronics guide. Engaging the phase switch can cancel the feedback frequency, allowing you to push more level before howling. For more on this, see acoustic-electric feedback.

For musicians who play in loud rock bands or on big stages, an undersaddle pickup is generally the safer bet. For quiet coffeehouse gigs or home recording, a soundhole pickup may be perfectly adequate and easier to manage.

Installation and Modification

Installation effort is where the two pickups really diverge. Soundhole pickups are a true drop-in upgrade. You place the pickup over the soundhole, adjust the height so it is close to the strings without touching them, and plug in. No permanent changes, no tools, and you can switch it between two different guitars in a matter of minutes. This makes it a great first pickup for a beginner or for someone who wants to keep their instrument stock.

Undersaddle pickups, on the other hand, require permanent installation. The process typically involves removing the bridge saddle and nut, routing a channel under the saddle, drilling a hole for the pickup wire, installing an output jack on the end block, and fitting a new saddle that transmits even pressure across all six strings. Because of this complexity, installation is rarely a weekend DIY project unless you are an experienced woodworker. Many guitar shops charge a fee for the labor, which adds to the overall cost of going undersaddle. If you are not comfortable with hand tools and careful measurement, it is worth paying a professional to ensure the saddle seats properly and the pickup outputs a balanced signal. Our guide to acoustic guitar setup covers some related skills.

What to Pick for Your Playing

If you are a gigging musician who needs a reliable, feedback-resistant amplified tone with a natural acoustic character, an undersaddle pickup is the right choice. Look for an acoustic-electric guitar with a quality undersaddle system, such as those from Martin or Takamine, which often include a built-in preamp with a phase switch. You can also add an undersaddle pickup to an existing guitar, but budget for a professional installation. Consider browsing the best acoustic-electric guitars to see what's available.

If you want a simple, reversible way to amplify your current acoustic without any permanent modifications, and you prefer a warmer, more electric-inspired sound, a soundhole pickup is an excellent option. It is especially useful for singer-songwriters who want to quickly plug in at an open mic or for guitarists who own several instruments and want one pickup to share. It's also a good choice for beginners exploring amplification; see our beginner acoustic guitar guide for more.

Consider also how you will use the pickup. For recording purposes, an undersaddle pickup paired with an acoustic preamp that includes a body resonance control can sound very natural. For live performance where feedback is always a threat, the undersaddle's phase switch is invaluable. On the other hand, if you mostly play at home or in a studio and want a mellow, smooth tone without altering your guitar, a soundhole pickup might be all you need. Remember to explore the acoustic guitar pickup types for a broader context.

What to pick for your use

Questions

Can I use a soundhole pickup on a classical guitar?

Yes, soundhole magnetic pickups work on nylon-string guitars as long as the strings have a ferrous core. Many players use them on classical guitars for a warm, direct amplified tone without modifying the instrument.

Do undersaddle pickups require a preamp?

Most undersaddle pickups are high-impedance and need a preamp to sound their best. Many acoustic-electric guitars include a built-in preamp with tone controls and a phase switch, as described in Martin's electronics guide.

Will a soundhole pickup harm my guitar's finish?

No, a properly installed soundhole pickup is attached to the instrument without contacting the top or the finish. It clamps to the soundhole edge, leaving no permanent marks.

Which pickup type is better for recording?

Undersaddle pickups often provide a cleaner, more balanced signal for recording, but they can sound artificial compared to a microphone. Soundhole pickups add a warmer color that may suit folk or singer-songwriter sessions. The best choice depends on the tone you want and the gear you have.

Can I combine both pickup types on one guitar?

Yes, some acoustic-electric guitars come with a dual system that includes an undersaddle piezo and a soundhole microphone, and you can also retrofit a soundhole pickup alongside an existing undersaddle system. This gives you the option to blend the two tones, as seen in high-end systems like the LR Baggs Anthem.