Multi-channel amps are still the most popular in this category, and all of the amps on this list have both an acoustic guitar input and a mic input. These are obviously good for guitarists who also sing. Many of these amps have HF drivers (also called tweeters) to better handle the high frequencies of acoustic instruments and even vocals. And because of this "full-range" tweeter and woofer setup, acoustic amps are more like PA speakers than regular electric guitar amps.
Here are the Best acoustic amp under 500 the market, based on real user reviews and ratings, including the most recent ones. We kept the price-based groupings from the last edition for this one, so it will be easier for you to see which ones fit your planned budget.
Fender Acoustasonic 15 Acoustic Guitar Amplifier - Brown and Wheat Bundle with Instrument Cable, 24 Picks, and Austin Bazaar Polishing ClothView on Amazon
Acoustic Guitar Amplifier, 20 Watt Portable Bluetooth Amp for Guitar Acoustic with Reverb Chorus Effect, 3 Band EQ(Including Microphone and Guitar Cable)View on Amazon
Behringer ULTRACOUSTIC AT108 Ultra-Compact 15 Watt Acoustic Instrument Amplifier with VTC-Technology and Original 8" Bugera SpeakerView on Amazon
Positive Grid Spark 40-Watt Combo Practice Guitar Amplifier Electric Bass and Acoustic Guitar Amp with Spark Mobile AppView on Amazon
- BrandPositive Grid
FLAMMA FA05 Electric Guitar Amplifier Combo Guitar Amp 5 Watt Support Bluetooth Headphone 7 Preamp Models Built-in Mod Reverb Delay Chorus Effects 40 Drum Machine for Performance Practice RecordingView on Amazon
LyxPro 40 Watt Electric Guitar Amplifier | Combo Solid State Studio & Stage Amp with 8” 4-Ohm Speaker, Custom EQ Controls, Drive, Delay, ¼” Passive/Active/Microphone Inputs, Aux in & Headphone JackView on Amazon
Last update on 2023-02-09 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API
Acoustic guitar amps are very different from electric guitar amps, so if this is your first time buying an amp for your acoustic instrument, please read the tips below carefully to make sure you get the best amp for your needs.
An electric guitar amp is meant to change the sound in pleasing ways and be a big part of your tone, while an acoustic amp is meant to reproduce the sound of your instrument as accurately as possible with as little change as possible. This is called "transparency."
Electric amplifiers let you turn them up really loud, but as they get really loud, they tend to distort harmonically. Because this is not what you want in an acoustic amp, they usually limit the volume before any significant harmonic distortion happens. This means that an acoustic amp with the same power rating as an electric amp won't sound quite as loud. This is why you might see customer reviews where the owner of a new acoustic amp says something like, "It's not as loud as I thought it would be."
Best-value option: Fender Acoustasonic 40
There are a few important things to think about if you want to sing through your amp while you play.
First of all, if you use condenser mics, you'll need an amp with phantom power (unless your mic uses batteries). Different amps give off different amounts of voltage, with 15V, 24V, and 48V being the most common. Make sure that the amp you want will work with the condenser microphones you want to use. If you only use dynamic microphones like the SM58, you don't have to worry about this. Check out our guide to The Best Live Vocal Mics to learn more about microphones.
Second, some amps have separate channels for microphones and instruments, while others share things like effects and DI outs between channels. Read the details of each amp carefully to make sure it has the right number of channels for you to play an instrument and sing through it at the same time.
Best Overall Behringer Ultracoustic AT108
When using acoustic amps, the risk of feedback is always there, especially with acoustic guitars because they resonate so well. Depending on the sound of the room you're playing in, you might have trouble at high volumes or at lower volumes. The easiest thing to do is to change the EQ, but in the long run, it will be better for you to get an amp with anti-feedback features. Different amps solve the problem in different ways, but Notch Filters are usually better than phase switches.
Best-value option: Fender Acoustasonic 15
Full Range Speakers
Most acoustic amps have full-range speakers, which have an LF driver or Woofer for low to midrange frequencies and an HF driver or Tweeter for high frequencies. This set-up makes it easier to reproduce the percussion and high-end zing of real sound. This also means that acoustic amps can be used with other mic'd instruments and vocals, making them useful as small PA systems.
PA instead through a preamp
Some guitarists use an acoustic preamp instead of a separate amp for their acoustic guitars. Because pickups have a high impedance, you can't plug them directly into your mixing console. Instead, you need a preamp, and the cable from your guitar to the preamp should be as short as possible. Our guide to Acoustic Preamps has more information about this.
Alternative Powered PA Speaker
Powered PA speakers are full-range speakers that often have multi-channel controls built in. This means they can be used with microphones and instruments like acoustic-electric guitars. These speakers are flexible enough to work with different kinds of electronic instruments. They also make good sound and project it far, but they don't have any controls or effects to stop feedback.