The MM-04 is a preamp booster developed for Children of Bodom guitarist Alexi Laiho, and is a key element in creating his trademark sharp sound.

Developed jointly with ESP and ESP distributor MUSAMAAILMA in Finland, where Alexi is from, we have created this preamp for all guitarists.

The MM-04 consists of four preset frequency switches, a gain control, and a master volume. This is a preamplifier with exactly the same specifications as the world's leading guitarists who are currently searching for the heavy rock sound.