Line 6 Catalyst 100 review

Line 6 shakes up the budget digital combo market with a new range that packs HX-quality amp sounds and effects into handsome cabinets

Line 6 Catalyst 100
(Image: © Future / Olly Curtis)

Guitar World Verdict

The Catalyst’s sounds and effects are inspiring, pushing you to play better to get the most from them, while the range prices are very affordable. At these prices – and despite stiff competition – we think amp modelling has never sounded so good.


  • +

    Excellent HX-quality amp voices and effects.

  • +

    Familiar controls.

  • +

    Great choice for live and home/studio use.

  • +

    Excellent direct output.

  • +

    Catalyst Edit app.


  • -

    Some higher gain sounds are a little muddy and compressed when used with a real band.

  • -

    No Bluetooth link for the app.

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.

Line 6 is one of the original pioneers of digital amp modelling, with a history that stretches back to 1996 and the original AxSys 212. 

However, it was the arrival of the POD a couple of years later that really cemented the company’s reputation and changed the face of guitar amplification. 

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Nick Guppy

Nick Guppy was Guitarist magazine's amp guru for over 20 years. He built his first valve amplifier at the age of 12 and bought, sold and restored many more, with a particular interest in Vox, Selmer, Orange and tweed-era Fenders, alongside Riveras and Mark Series Boogies. When wielding a guitar instead of soldering iron, he enjoyed a diverse musical career playing all over the UK, including occasional stints with theatre groups, orchestras and big bands as well as power trios and tributes. He passed away suddenly in April 2024, leaving a legacy of amplifier wisdom behind him.