Pridden is commonly credited for having created on-stage "wedge" monitors in the late '60s; previously, onstage performers had no way to hear themselves singing, so during the 1968 American tour he began placing a speaker cabinet on its side in front of the band. However, the band preferred stage side monitors for a long period, so he helped to develop these with the WEM company, even loaning the bands stage PA to other acts at both the 1969 and 1970 Isle of Wight Festival. Pridden then requested a slanted speaker cabinet that sat on the floor and tilted upwards toward the performer. Since that time, onstage "wedge" monitors have become standard equipment at virtually every live performance of any scale worldwide.