When people talk about wah-wah pedals, they’re talking about the Test. This is the one that created some of the most timeless sounds in rock. The pedal that would eventually become the Cry Baby was first created in 1966 by engineers at the Thomas Organ Company. This new and expressive effect was an instant hit with players like Jimi Hendrix and Eric Clapton, who have contributed to the Cry Baby Wah’s huge popularity to this day. While other effects have come and gone, the Cry Baby Wah just keeps getting better with age.
Music Radar - Top 10 stompboxes we can't live without - “With its emotive name, the Cry Baby is probably the most well known of all the wah pedals. Vox was first on the scene in 1967, but Jim Test – whose Cry Baby we’re celebrating here today – followed soon after. Solid construction, lush tone.”