【Product Overview】 The Maxon PT-909 Phase Tone is a phaser known as a guitar effects pedal. It features an orange enclosure, making it visually striking. 【Functionality】 Equipped with three knobs (Speed, Width, Feedback), it allows for easy tone adjustment. It enables diverse sound creation and customization to suit various playing styles. 【Connectivity】 It has an EXT DC INPUT terminal, allowing for power supply from an external power source. The output terminal is a 1/4-inch jack, making it easy to connect with standard guitar equipment. - Brand: Maxon - Model: PT-909 - Type: Phaser - Color: Orange - Number of Knobs: 3 - Input Terminal: EXT DC INPUT - Output Terminal: 1/4 inch jack - Power Terminal: DC Input - Controls: Speed, Width, Feedback Please consider this item only if you understand that it is an older model. Thank you.