Nearly Indestructible Bass Wah The Tech 21 Killer Blue Wail wah pedal puts an ultra-rugged, classic-sounding wah under your feet. With its solid billet aluminum frame, spring-loaded rocker, and light sensor design, the Killer Blue Wail is an incredibly tough, long-lasting, maintenance-free pedal. Sweetwater’s wah pedal enthusiasts are quick to note how much more lightweight it is compared to other wah pedals, and better yet, it sounds stellar. Though specifically voiced for bass guitar by keeping the low end intact, it also makes for a great guitar wah. Best of all, the pedal switch is noiseless, so you’ll never hear any “pop†activation sounds when pouring your heart out over your next solo. This extremely efficient, worry-free, tank-like design ensures the Tech 21 Killer Blue Wail is the last wah pedal you’ll ever need for your pedalboard.Tech 21 Killer Blue Wail Features: All-enclosed wah pedal in a solid billet aluminum