Based on the superb Jimi Hendrix Wah-Wah sound, the GD 30, with its 90s build and component quality offers much, much more. With exceptionally pronounced Wah-Wah effects which can also be switched to bypass mode the GD30 is ideal for today's musical styles. Compared to many competing units on todays market, the GD30 offers a great sounding, exceptionally pronounced Wah-Wah sweep. The battery compartment cover is missing but otherwise in good working order. Bought recently off Basschat with other stuff but surplus to requirements, I'd trade it for a Volume pedal, cheers. 07734303599