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Can You Use Guitar Amp as Speaker?

Can You Use a Guitar Amp as a Speaker?

It is possible to utilize guitar amplifiers as speakers, although the audio quality will probably be lesser than with regular speakers, and too much volume should be avoided as it can damage the speakers. To get the finest quality and to keep your amplifier safe, avoid playing music with a lot of bass.

Understanding Guitar Amps

Before we delve into the topic, let’s first understand what a guitar amp is and how it functions. A guitar amplifier is an electronic device that intensifies the electrical signal produced by an electric guitar, making it audible through a speaker. It consists of multiple components such as the preamp, power amp, and speaker, all of which work together to produce the desired sound.

Using a Guitar Amp for Other Audio Sources

Even though guitar amplifiers are primarily designed for guitars, they can also accommodate other audio sources, including keyboards, microphones, and even mp3 players. By connecting these audio devices to the input of a guitar amp, the built-in speakers can be utilized to amplify the sound.

Connecting Your Device to a Guitar Amp

To use a guitar amp as a speaker for your audio device, a proper connection is required. The most prevalent method is to utilize the instrument input on the amp, often labeled as “Guitar”. This input is designed to accept the signal from electric guitars, but it can also accommodate line-level signals from other audio devices.

For instance, if you want to connect your smartphone to a guitar amp, you can use a cable with an 1/8″ stereo mini-jack on one end (plugged into the headphone jack of your device) and an appropriate connector (such as a 1/4″ mono or stereo plug) on the other end, which will be connected to the instrument input of the amp.

It’s crucial to remember that guitar amps may have different input and output options, depending on the model and brand. Some amps have additional auxiliary inputs, RCA inputs, or even Bluetooth connectivity. Always consult the user manual or manufacturer’s specifications to determine the best connection method for your specific amp and audio device.

Limitations and Considerations

Using a guitar amp as a speaker can be a convenient solution, but certain limitations and factors that may affect sound quality and overall performance must be considered.

Frequency Response

Guitar amps are designed to emphasize the frequencies produced by electric guitars, typically within the range of 80 Hz to 5 kHz. While this range captures the unique character and tone of guitars, it may not offer the same clarity and accuracy when reproducing other audio sources. For instance, vocals require a broader frequency response to accurately convey the nuances and richness of the human voice.

Power Handling

Another crucial consideration is the power handling capabilities of the guitar amp. Since guitar amps are primarily built to amplify the relatively low-level signals produced by electric guitars, they aren’t designed to handle the same power levels as dedicated speakers. Using a guitar amp at higher volumes or with powerful audio sources can potentially damage the speakers or other components of the amp.

Sound Reproduction

Guitar amps often have specific tonal characteristics tailored to the needs of guitarists. These characteristics may include coloration, distortion, and other tonal shaping elements. While these features can be desirable when playing an instrument, they may not accurately reproduce the sound from other audio sources. The resulting sound quality may differ significantly from what you would expect from a dedicated speaker system.


In conclusion, while it is possible to use a guitar amp as a speaker for other audio devices, there are limitations and considerations to take into account. Guitar amps are optimized for electric guitars and may not provide the same level of frequency response, power handling, and sound reproduction as dedicated speakers. If you require accurate and high-fidelity sound reproduction, using a purpose-built speaker system specifically designed for your audio source would be the recommended choice.

How to Use a Guitar Amp as a Speaker for Music

By connecting a smart device, such as a phone, tablet, laptop, etc. to your amplifier through a 3.5mm jack, also known as an Auxiliary (AUX) connection, you can use a guitar amplifier as a speaker. Directly Connecting a Smart Device and Amp:

Both the amp itself and the outlet on your guitar amplifier should be turned off.
Find your guitar amplifier’s AUX input.
Use the 3.5mm jack on your device to connect an AUX cable to your amplifier.
Make sure your amplifier’s volume and distortion controls are all set to 0.
Start the amplifier, then gradually raise the volume.
To prevent the speaker from blowing, don’t turn the volume up past halfway.