Best Acoustic Guitar Amp — Reviews and Comparisons


Looking for the best acoustic guitar amp? You might find it here — reviews and comparisons of the top amplifiers are featured in this post. In the chart that follows, such amps are compared side by side according to their features. If you need help on how to compare the features, there is a guide about them further below.

Guitar Amp Comparison Chart

OptionWattsWeight (lbs.)ChannelsEffectsPrice
Behringer Ultracoustic ACX180018040.62 for instrument and mic
with separate gain,
compressor, FX and EQ
16 total including reverb,
modulation, delay, etc. and
See exact price
Crate CA15 Cimarron15212 for instrument and mic
with separate gain
See exact price
Fishman Loudbox Mini6019.72 for instrument and micReverb (both channels) and
chorus (instrument only)
See exact price
Kustom Sienna 3030312 for instrument and micReverb and chorus$
See exact price
Marshall AS50D5035.32 for instrument and micReverb and chorus$$
See exact price
Roland AC-333010.362 for instrument and micReverb, chorus, ambience,
looper (records 40 seconds)
See exact price

Acoustic Guitar Amps Reviews

Below are reviews of some of the options presented in the table above. Videos of them in action are also included. However, bear in mind that the sound may not be accurate due to uncontrollable factors like the recording process, etc. There are also links to more reviews and information in case you’ll need them.

Behringer Ultracoustic ACX1800 Review

The Behringer Ultracoustic ACX1800 is a powerful 180-Watt amplifier. Such power work well inside restaurants, coffee houses, hotel lounges and even shows with around a hundred audience. But its big sound comes with 40.6 pounds of weight, making it the heaviest among the options here. Nonetheless, the ACX1800 makes it worthwhile by carrying along the most features than any of the other amps.

The ACX1800 has 2 dedicated instrument and microphone channels with separate Gain, Compressor, EQ and effects controls. This gives you a better command of your sound unlike amps with shared controls. And the effects processor of the channels each have 16 programs including reverb, delay, modulation, and combinations thereof. This makes the ACX1800 even more flexible to your creativity.

Click here for additional information (like the speakers’ features).

Roland AC-33 Review

In contrast to the previous amp, the Roland AC-33 is the lightest option. It can also be powered with batteries, making it really flexible and portable. Ironically though, the volume may not be enough for everywhere you might take it to, because it’s only 30 watts. Nonetheless, the AC-33 takes many features with it like the looper effect, which lets you back yourself, as shown below.

The AC-33 also has 2 channels for your instrument and microphone. Hence, it lets you be a one man band of sorts. Aside from the looper, there are also other effects like reverb, chorus and ambience. While not as much as the previous amp, it is more than the other bigger and heavier ones. An AC-33 owner also discovered that together with a battery powered preamp, the amp is actually loud.

To discover more surprising findings by owners, click here.

Acoustic Guitar Amplifiers Buying Guide

You have your acoustic guitar, and you’re ready to be heard. And nothing gets you heard better than an amplifier. But there are a lot of such to choose from, and there are many features to consider and compare. This guide will help you consider the most relevant ones – those that are most likely to meet your needs. The tips here have worked for many others, so they would probably be useful to you too.

Type of Amplifier

There are two common types of guitar amplifiers: tube and solid-state.

Tube amps use vacuum tubes to increase the amplitude of a guitar’s sound. These tubes may be changed with other models to alter the amp’s tone, making it flexible to your sonic taste. However, tube amps are generally heavier and maybe more inconvenient to bring along. They are also a bit more pricey, but they do tend to be of higher quality and longer lasting. But you do have to replace the tubes over time.

Solid state amps generally make use of a circuit board or transistors. Before, solid state amps used to sound somewhat “sterile” and were not preferred by purist guitarists. But now, they tend to amplify a clean representation of the acoustic guitar’s sound. They are also as reliable, lighter and a little more affordable.

Volume and Power

Obviously, anyone looking for an amplifier is first and foremost in need of more volume. And power, in terms of wattage, is the indicator of how big the sound will be from your amp. Determing the right amount of watts depends on where you would typically need amplification.


If you’ll be using your amplifier in smaller spaces, 20 to 30 watts is probably all that you need. But if you’re planning to serenade some folks in a cafe, you might need around 50 or 60 watts to fill such venue. Meanwhile, the more powerful 100-watt amplifiers would be suited for playing with a full band with a drummer that you have to mix with.

Number of Channels

Channels are inputs for sound sources. If you are like most guitarists, you are probably also singing while playing your instrument. If so, you also have to amplify your voice to keep up with the guitar. Unless you prefer singing on the top of your lungs, then a multi-channel or input amp is what you need.

For singer-guitarists, what’s recommended is an amp with an XLR input for the microphone (in addition to the pickup input). Using such input, balancing your voice with your instrument turns your amp into a self-contained PA system. This can be handy in situations where there’s no full-blown PA system (like in small churches). If you will use a condenser mic (probably in a studio), the amp should be able to provide phantom power.

Effects and Speakers

If you are not a purist who loves experimenting, then you’ll probably like to have effects included with your amp. Effects can augment your guitar’s sound with more “flavor,” like a simple thickening up, or even an almost psychedelic vibe. Below is a video showing how the delay effect could result to a trance like sound.

Another interesting effect is the loop function. It lets you make a rhythm sample and solo over it, as if there’s another set of strings being strummed in the background. A video of such effect in action is in one of the amp reviews below. Some of the other effects that you might also hear of are: reverb, chorus, flange, phaser and tremolo.

Your plans to use effects or not should be considered when selecting the speaker configuration of amps. If you prefer the natural acoustic guitar tone, then you’ll be just fine with a mono or single speaker amp. But if you’re planning to use a ping-pong dealy, what you’ll need is a stereo amp.

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