Fender Mustang LT40S review

The Big F's desktop amp presents guitar players with an affordable and inspiring tool for practice. But how does it measure up in an increasingly crowded field?

Fender Mustang LT40S
(Image: © Future / Olly Curtis)

Guitar World Verdict

The Mustang LT40S is affordable, compact and offers a cornucopia of classic tones in stereo. Some of the competition do high-gain amp voicings better, but the Fender amp models are where this desktop champ really excels.


  • +

    Models of classic Fender amps are exceptional.

  • +

    Effects are well voiced.

  • +

    Lots of great tones to be had.

  • +

    Great price, practical features.


  • -

    No mids control on the front panel leaves you dependent on the app.

  • -

    Better high-gain tones are available elsewhere.

  • -

    No Bluetooth.

You can trust Guitar World Our expert reviewers spend hours testing and comparing guitar products so you can choose the best for you. Find out more about how we test.

The rise of pedals, profiling and desktop guitar amps illustrates the flexibility guitar players are now embracing. And it’s desktop practice amps that have the widest appeal and advantages, because they all acknowledge a simple fact: most guitarists are playing at home.

With these diminutive combos packing self-contained virtual rigs inside, we’re spoilt for choice, with the likes of Boss, Yamaha and Positive Grid raising the standards. Now Fender is bringing this refreshed successor for the GT40 to the table/desk. 

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Rob Laing

Rob is the Guitars Editor for MusicRadar, handling news, reviews, features, tuition, advice for the strings side of the site and everything in between. Before MusicRadar, he worked on guitar magazines for 15 years, including as Editor of Total Guitar. He's currently set aside any pipe dreams of getting anywhere with his own songs and is enjoying playing covers in function bands.