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 is often credited with creating on-stage "wedge" monitors in the late 1960s; prior to this, performers had no way to hear themselves singing live. As a result, he introduced a solution by placing a speaker cabinet at an angle during his 1968 American tour. However, the band preferred stage-side monitors for a long time, so Pridden worked with the WEM company to develop these and even lent their PA equipment to other acts at both the 1969 and 1970 Isle of Wight Festival.