Question: must have effects for guitar?
Answer: Distortion Pedal. The distortion pedal is one of the most popular guitar foot pedals among aspiring and professional guitarists. ... 
Overdrive Pedal. ... 
Fuzz Pedal. ... 
Delay Pedal. ... 
Reverb Pedal. ... 
Wah Pedal. ... 
Chorus Pedal. ... 
Phaser Pedal.