Check the listing for details. Line 6 Guitar Port.. Condition: Used. Listed at 90.00 USD. The Line 6 Guitar Port is a digital processor unit designed specifically for electric guitars. It is a versatile device that allows guitarists to enhance their sound with a variety of effects and features. The Guitar Port is known for its high-quality performance and compatibility with a range of electric guitars, making it a popular choice among musicians looking to boost their musical capabilities. Its user-friendly interface and reliable brand reputation make it a valuable accessory for any guitarist.