Watch the Lazy Freeway: Rhythm online guitar lesson by Jeff McErlain from Blues-Rock Evolution

One obvious side effect of cranking a 50 or 100 watt Marshall to the point of distortion is that it gets very loud; this may not be too good for one's ears, but it sure is fun!
Tinnitus-bound Marshall users from the rock pantheon include everyone from 1960s blues-rock originators Jimmy Page and Jimi Hendrix and '70s arena-rockers Ritchie Blackmore (Deep Purple), Angus Young (AC/DC) and Billy Gibbons (ZZ Top) to more recent innovaters like Eddie Van Halen and Eric Johnson.