Line 6 MM4 review

The one that started it all

  • £229
  • €285
  • $349
With four assignable footswitches you can have four effects ready for use at any time

MusicRadar Verdict

Four on the floor at all times.

MusicRadar's got your back Our team of expert musicians and producers spends hours testing products to help you choose the best music-making gear for you. Find out more about how we test.

Line 6's MM4 Modulation Modeler launched way back in 2000, alongside its much-loved green delay sibling, the DL4, and the less popular DM4 and FM4. And while the MM4 might have been around for a while now, it's still got the goods.

"The MM4 offers a whole range of different modulation effects, based on some vintage classics"

A digital modelling pedal, the MM4 offers a whole range of different modulation effects, based on some vintage classics, but its real strength is the fact that with four assignable footswitches you can have four effects ready for use at any time.

It's easy to use, too: simply dial in the sound with five large knobs and hold down a footswitch to store it.

If it ain't broke, don't fix it. Line 6 got it right the first time, and the MM4 is an ideal choice if you want instant access to four different effects.

Trevor Curwen has played guitar for several decades – he's also mimed it on the UK's Top of the Pops. Much of his working life, though, has been spent behind the mixing desk, during which time he has built up a solid collection of the guitars, amps and pedals needed to cover just about any studio session. He writes pedal reviews for Guitarist and has contributed to Total Guitar, MusicRadar and Future Music among others.