The JOYO Vintage Phase Electric Guitar Pedal is a classic phaser pedal designed to recreate the sounds of the 70's. With true bypass technology and a compact size, this analog pedal is perfect for lap and pedal steel guitars, electric guitars, and travel guitars. The pedal offers a speed range of 0.2Hz to 14Hz, controlled with a SPEED knob, and can be powered by a DC 9V adapter or 6F22 9V battery. The JOYO brand is known for producing high-quality guitar effects, and this Vintage Phase pedal is sure to add a touch of vintage flair to your music.