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Boss Dual Cube LX review: A tremendous portable amp

Don’t let the tiny looks of this amp fool you! There’s a miraculous amount of different sonic textures jam-packed within this small Dual Cube LX amp. Given its size, it is a tremendous traveling friend and a wet dream of any self-respecting street musician!

About the author

I’m an experienced guitarist, composer, and music producer. Over the years, I garnered a lot of studio experience, as well as impressive touring mileage. My theoretical and practical knowledge of guitar gear and audio design is what I rely upon delivering my take on different pieces of gear that I review.

Boss Dual Cube LX combo amplifier
Image: Higher Hz

Final verdict on the Dual Cube LX 4.0

Having its size in mind, you will be surprised by the amount of racket this amp can produce! Not only that, but it sounds really good when cranked.

Having said that, in an ideal scenario, this wouldn’t be your first choice for a grand live stage. It is an impeccable bedroom and street amp that can also serve you well in the studio and on some moderately-sized stages.

It is incredibly versatile with an option to save up to 27 presets on board.

What I like

  • Vast selection of different diallable sounds.
  • Incredibly lightweight and tiny. Great for traveling.
  • Sounds great at all stages of volume.

What I don’t like

  • If you want to use it on a big stage, you need to go straight to the PA.
  • The effects section is limited to one effect per category only.
Buy Boss Dual Cube LX at: SweetwaterAmazon

Effects 4.0

Within the effects section there are two main knobs. One is the modulation knob. You can use it to dial in a vast number of modulation effects such as chorus, flanger, phaser, tremolo, as well as heavy octaver. The other knob is the one you would use to dial in wet effects.

Boss Dual Cube LX effects and controls
Image: Higher Hz

With this amp, you are getting delay and reverb, as far as wet effects go. The reverb is available in both hall and spring variations. As far as delay is concerned, you can tap the light button to set the delay BPM.

One of my favorite features here is the usage of the footswitch out to engage a looper. It really is an amazing bedroom and street amp, I am telling ya!

Features 4.5

In total, this amp packs 10 watts of power. It features two 4-inch speakers with 5 watts of power each.

One of the coolest things about the Boss Dual Cube LX guitar amp is the stereo in jack. You can use it to connect two different instruments or to play a backing track beneath your own guitar signal.

Within this neat package, you are getting seven different amps:

  • Acoustic Sim is an immense-sounding section of this amp. It features an incredible, shimmering bright sound with a lot of tonal juices flowing through the lively tone of the strings.
  • JC Clean is a really good, pristine-clear channel with a lot of potential for sonic exploration.
  • US Combo is best described as akin to the traditional Fender amp sound.
  • Brit Combo follows the amazing tradition of UK guitar tones in the style of VOX, Orange, and other guitar manufacturing giants from the Gordon Albion.
  • Hi-Gain Stack is a faithful simulation of the overdriven Marshall amp tones.
  • Metal Stack provides some great traditional metal sounds.
  • Extreme gives you that ultra-saturated, scooped ENGL-esque metal guitar sound.
Boss Dual Cube LX amp types
Image: Higher Hz

Another great feat here is the added mic preamp function that allows for some advanced sound-tweaking.

Aside from the expected EQ section, you are also getting the usual suspects such as gain and volume. Have in mind that the knobs are behaving differently in accordance to the given amp you are using.

The overall master control is also present within this package. Finally, the memory light button (shown in green, yellow, and red) can be used to pair different amps.

A whole bunch of goodies within a tiny amp… Told ya!

Connectivity 4.0

The headphones out is a great option for silent practicing, so you don’t harass your immediate surroundings. The cool thing is that you get a dedicated volume control, so you can tweak away as you like.

There is a USB out that you can use to record straight into your DAW. Besides that, the amp features a line out so you can send your signal directly to the PA in a live scenario.

You can also connect your amp to an iPhone or an iPad via Bluetooth. The catch is that you have to purchase the Boss Bluetooth adapter to use it.

Finally, I find it useful that this amp can be used without the power supply cable. The Dual Cube LX can be run solely on batteries if that’s what you prefer.

Build and design 3.8

This is a very nice-looking combo, I must admit! Better yet, it is incredibly lightweight! Great for traveling and handling on a day-to-day basis.

The material seems somewhat fragile, but I am sure it can last you a long time with proper care.

Who is the Boss Dual Cube LX combo amplifier best suited for?

This is an enormously great bedroom amp that can also be a tremendous traveling friend of a street musician. It can be adequate for anyone from beginner level to pro-level, in accordance with your needs.

The sheer amount of versatility of this amp is a real selling point and I urge you to check it out if you are in need of a great lightweight, and volume-friendly amp!

Buy Boss Dual Cube LX at: SweetwaterAmazon

Video demo

Watch this video by my colleague Fabio, where he puts the Boss Dual Cube LX portable combo amplifier to the test.