Diagram of normal sinus rhythm as seen on ECG. In atrial fibrillation the P waves, which represent depolarization of the top of the heart, are absent.
The wah-wah pedal is based on a simple concept but its effect is far more dramatic. Using a powerful filter to sweep through a broad frequency spectrum, the wah pedal boosts and exaggerates specific tones. Creating sounds that range from thick, flubbery bass to scratchy, stinging treble.
One recent introduction we get asked about more & more is the cajon pedal. Kit players will be used to the idea of using the feet to play bass drum, hi-hat, effects etc. A number of manufacturers have started to adapt the traditional bass drum pedal so that it fits to a cajon, allowing the player to use their feet.